[in preparation] Petra Hendriks. Asymmetries between Language Production and Comprehension. Under contract with Springer. [More info]
[submitted] Bart Hollebrandse, Angeliek van Hout & Petra Hendriks. Children's first and second-order false-belief reasoning in a verbal and a low-verbal task. January 2012.
[submitted] Petra Hendriks, John Hoeks, & Jennifer Spenader. Reflexive choice in Dutch and German. December 2011.
[submitted] Petra Hendriks, Charlotte Koster, & John Hoeks. Referential choice across the lifespan: Why children and elderly adults produce ambiguous pronouns. November 2011.
[submitted] Jacolien van Rij, Hedderik van Rijn, & Petra Hendriks. A cognitive model of the acquisition and use of referring expressions: Effects of working memory and perspective taking. October 2011.
[submitted] Sandrien van Ommen, Petra Hendriks, Dicky Gilbers, Vincent van Heuven, & Charlotte Gooskens. Can the asymmetry in intelligibility between Danish and Swedish be explained by lenition? October 2011.
[submitted] Ruth Koops van 't Jagt, John Hoeks, Gillis Dorleijn & Petra Hendriks. An eyetracking investigation into the visuospatial aspects of reading poetry. February 2011. [Pdf]
[submitted] Petra Hendriks. No equal treatment for antecedents in a coherent discourse. September 2009. [Pdf]
[2010] Petra Hendriks, Helen de Hoop, Irene Krämer, Henriëtte de Swart, & Joost Zwarts (2010). Conflicts in Interpretation. Equinox Publishing, London. [More info]
[2006] Reinhard Blutner, Helen de Hoop, & Petra Hendriks. Optimal Communication. CSLI Publications, Stanford, CA.
[1997] Petra Hendriks, Niels Taatgen & Tjeerd Andringa (Eds). Breinmakers & Breinbrekers. Inleiding Cognitiewetenschap. Addison Wesley Longman, Amsterdam.
[1995] Petra Hendriks. Comparatives and Categorial Grammar.
PhD Dissertation, University of Groningen.
[2012] Gerlof Bouma & Petra Hendriks. Partial word order freezing in Dutch. Journal of Logic, Language and Information 21:1. [Pdf]
[2011] John C.J. Hoeks & Petra Hendriks. Optimality Theory and human sentence processing: Towards a cross-modular analysis of coordination. Journal of Cognitive Science 12:1, 83-128. [Pdf]
[2010] Jacolien van Rij, Hedderik van Rijn, & Petra Hendriks. Cognitive architectures and language acquisition: A case study in pronoun comprehension. Journal of Child Language 37:3, 731-766. [Pdf]
[2009] Jennifer Spenader, Erik-Jan Smits, & Petra Hendriks. Coherent discourse solves the Pronoun Interpretation Problem. Journal of Child Language 36:1, 23-52. [Pdf]
[2009] John Hoeks, Gisela Redeker, & Petra Hendriks. Fill the gap! Combining pragmatic and prosodic information to make gapping easy. Journal of Psycholinguistic Research 38:3, 221-235. [Pdf]
[2008] Petra Hendriks, Christina Englert, Ellis Wubs, & John Hoeks. Age differences in adults' use of referring expressions. Journal of Logic, Language and Information 17:4, 443-466. [Pdf]
[2008] Liesbeth Flobbe, Rineke Verbrugge, Petra Hendriks, & Irene Krämer. Children's application of Theory of Mind in reasoning and language. Journal of Logic, Language and Information 17:4, 417-442. [Pdf]
[2007] Petra Hendriks, Hedderik van Rijn, & Bea Valkenier. Learning to reason about speakers' alternatives in sentence comprehension: A computational account. Lingua 117:11, 1879-1896. [Pdf]
[2007] Gosse Bouma, Petra Hendriks, & Jack Hoeksema. Focus particles inside prepositional phrases: A comparison of Dutch, English and German. Journal of Comparative Germanic Linguistics 10:1, 1-24. [Pdf]
[2007] Helen de Hoop, Petra Hendriks, & Reinhard Blutner. On compositionality and bidirectional optimization. Journal of Cognitive Science 8:2, 137-151. [Pdf]
[2006] Mariët Theune, Feikje Hielkema, & Petra Hendriks. Performing aggregation and ellipsis using discourse structures. Research on Language and Computation 4:4, 353-375. [Pdf]
[2006] John C.J. Hoeks, Petra Hendriks, Wietske Vonk, Colin M. Brown, & Peter Hagoort. Processing the NP- versus S-coordination ambiguity: thematic information does not completely eliminate processing difficulty. The Quarterly Journal of Experimental Psychology 59:9, 1581-1599. [Pdf]
[2006] Gineke ten Holt, Petra Hendriks, & Tjeerd Andringa. Why don't you see what I mean? Prospects and limitations of current automatic sign recognition research. Sign Language Studies 6:4, 416-437. [Pdf]
[2005/6] Petra Hendriks & Jennifer Spenader. When production precedes comprehension: An optimization approach to the acquisition of pronouns. Language Acquisition 13:4, 319-348. [Pdf]
[2004] Petra Hendriks. Coherence relations, ellipsis, and contrastive topics. Journal of Semantics 21:2, 133-153. [Pdf]
[2001] Petra Hendriks & Helen de Hoop. Optimality Theoretic Semantics. Linguistics and Philosophy 24:1, 1-32. [Pdf]
[2011] Maaike Veeninga, Sanne Kuijper, & Petra Hendriks. Steunpronomina die komen overal voor. Tabu 39:3/4, 111-130. [Pdf]
[2010] Ruggero Montalto, Angeliek van Hout, & Petra Hendriks. Comparing children's and adults' interpretation of Italian indefinite quantifiers. Linguistics in Amsterdam 3:2. (refereed) [Pdf]
[2007] Petra Hendriks. Bouwen aan betekenis. Tabu 36:3/4, 163-174. This article is the written version of my inaugural lecture. [Pdf]
[2007] Dicky Gilbers & Petra Hendriks. Asymmetrische afstanden in Optimaliteitstheorie. Tabu 36:1/2, 65-84. [Pdf]
[2006] John Hoeks, Petra Hendriks, & Gisela Redeker. Communicatie en het brein: Het gebruik van neuroimaging bij onderzoek naar dialogen. Tijdschrift voor Taalbeheersing 28:3, 245-264. (refereed) [Pdf]
[2005] Petra Hendriks, Susanne Hendrickx, Rosemarijn Looije, & Carina Pals. Hoe perfect is ons taalsysteem? Een bidirectionele OT-analyse van de verwerving van klemtoonverschuiving. Tabu 34:1/2, 71-97. [Pdf]
[2004] Petra Hendriks & Sybrand van der Werf. Regole di raggruppamento nella lingua e nella musica. Un programma informatico. Rivista di Analisi e Teoria Musicale X:2, 71-89. (refereed) [Here is the English version of this Italian paper, entitled Optimal groups in music]
[2004] Gineke ten Holt & Petra Hendriks. Out of memory: geheugen sneller vol in gebarentaal. De Psycholoog 39:2, 54-58. (refereed) [Pdf]
[2001] Petra Hendriks & Jan-Wouter Zwart. Initiële coördinatie en de identificatie van woordgroepen. Tabu 31:3/4, 105-118. [Pdf]
[to appear] Petra Hendriks, Helen de Hoop & Henriëtte de Swart (Eds). Special issue on the interplay between the speaker's and the hearer's perspective. Journal of Logic, Language and Information 21:1.
[2010] Petra Hendriks & Charlotte Koster (Eds). Special issue on asymmetries in language acquisition. Lingua 120:8.
[2006] Jennifer Spenader & Petra Hendriks (Eds). Special issue on cross-modular approaches to ellipsis. Research on Language and Computation 4:4.
[2005] Jennifer Spenader & Petra Hendriks (Eds). Proceedings of the ESSLLI '05 Workshop on Cross-Modular Approaches to Ellipsis. Heriot-Watt University, Edinburgh.
[2000] Petra Hendriks, Helen de Hoop, & Henriëtte de Swart (Eds). Special issue on optimization of interpretation. Journal of Semantics 17:3 & 17:4.
[to appear] Petra Hendriks, Ruth Koops van 't Jagt, & John Hoeks. Restricting quantifier scope in Dutch: Evidence from child language comprehension and production. To appear in: Britta Stolterfoht & Sam Featherston (Eds), Empirical approaches to linguistic theory: Studies of meaning and structure. Studies in Generative Grammar, De Gruyter. [Pdf]
[2011] Petra Hendriks & Jacolien van Rij. Language acquisition and language change in bidirectional Optimality Theory. In: Anton Benz & Jason Mattausch (Eds), Bidirectional Optimality Theory. John Benjamins, Amsterdam, pp. 97-123. [Pdf]
[2011] Petra Hendriks, Arina Banga, Jacolien van Rij, Gisi Cannizzaro, & John Hoeks. Adults' on-line comprehension of object pronouns in discourse. In: A. Grimm, A. Müller, C. Hamann & E. Ruigendijk (Eds), Production-comprehension asymmetries in child language. De Gruyter Mouton, Berlin, pp. 193-216. [Pdf]
[2011] Charlotte Koster, John Hoeks, & Petra Hendriks. Comprehension and production of subject pronouns: Evidence for the asymmetry of grammar. In: A. Grimm, A. Müller, C. Hamann & E. Ruigendijk (Eds), Production-comprehension asymmetries in child language. De Gruyter Mouton, Berlin, pp. 99-122. [Pdf]
[2009] Petra Hendriks, John Hoeks, Helen de Hoop, Irene Krämer, Erik-Jan Smits, Jennifer Spenader, & Henriëtte de Swart. A large-scale investigation of scalar implicature. In: U. Sauerland & K. Yatsushiro (Eds), Semantics and Pragmatics: From Experiment to Theory. Palgrave Studies in Pragmatics, Language and Cognition, Palgrave Macmillan, Houndmills, Basingstoke, Hampshire, UK, pp. 30-50. [Pdf]
[2009] Arina Banga, Ingeborg Heutinck, Sanne M. Berends & Petra Hendriks. Some implicatures reveal semantic differences. In: Bert Botma & Jacqueline van Kampen (Eds), Linguistics in the Netherlands 2009, John Benjamins, Amsterdam, pp. 1-13. [Pdf]
[2007] Erik-Jan Smits, Petra Hendriks, & Jennifer Spenader. Using very large parsed corpora and judgment data to classify verb reflexivity. In: António Branco (Ed.), Anaphora: Analysis, Algorithms and Applications. 6th Discourse Anaphora and Anaphor Resolution Colloquium, DAARC 2007, LNAI (Lecture Notes in Artifical Intelligence) #4410, Springer-Verlag, Berlin Heidelberg, pp. 77-93. [Pdf]
[2006] John Hoeks, Petra Hendriks, & Gisela Redeker. Pragmatische Hersengolven: De reactie van het brein op de schending van Griceaanse Maximes. In: H. Hoeken, B. Hendriks, & P.J. Schellens (Eds), Studies in Taalbeheersing 2, Van Gorcum, Assen, The Netherlands, pp. 108-119. [Pdf]
[2004] Petra Hendriks. Optimization in focus identification. In: Reinhard Blutner & Henk Zeevat (Eds), Optimality Theory and Pragmatics. Palgrave Macmillan, pp. 42-62. [Pdf]
[2004] Petra Hendriks. Either, both and neither in coordinate structures. In: Alice ter Meulen & Werner Abraham (Eds), The Composition of Meaning: From Lexeme to Discourse. John Benjamins, Amsterdam, pp. 115-138. [Pdf]
[2001] Petra Hendriks. Initial coordination and the law of coordination of likes. In: Ton van der Wouden & Hans Broekhuis (Eds), Linguistics in the Netherlands 2001, John Benjamins, Amsterdam, pp. 127-138. [Pdf]
[2011] Jacolien van Rij, Hedderik van Rijn & Petra Hendriks. Towards a cognitively plausible model of reference. In: K. van Deemter, A. Gatt, R. van Gompel & E. Krahmer (Eds), Proceedings of the PRE-CogSci 2011 workshop on Production of Referring Expressions: Bridging the gap between computational, empirical & theoretical approaches.
[2011] Bart Hollebrandse, Angeliek van Hout & Petra Hendriks. First and second-order false belief reasoning: Does language support reasoning about the beliefs of others? In: Jan van Eijck & Rineke Verbrugge (Eds), Proceedings of the Workshop on Reasoning About Other Minds: Logical and Cognitive Perspectives (RAOM-2011), Groningen, The Netherlands, July 11th, 2011. CEUR Workshop Proceedings Vol. 751, CEUR-WS.org, pp. 93-107. [Pdf]
[2011] Jacolien van Rij, Hedderik van Rijn & Petra Hendriks. WM load influences the interpretation of referring expressions. In: Frank Keller & David Reitter (Eds), Proceedings of the 2nd workshop on Cognitive Modeling and Computational Linguistics. Association for Computational Linguistics, Portland, OR, pp. 67-75. [Pdf]
[2011] Ruggero Montalto, Angeliek van Hout & Petra Hendriks. Acquiring the ordering of Italian near-synonymous quantifiers. In: Nick Danis, Kate Mesh, & Hyunsuk Sung, (Eds), Proceedings of the 35th annual Boston University Conference on Language Development (BUCLD 35), Cascadilla Press, Somerville, MA, pp. 477-487. [Pdf]
[2010] John C. J. Hoeks, Petra Hendriks, Gisela Redeker & Laurie A. Stowe. Gricean brainwaves: Brain responses to pragmatic violations in dialogues. In: S. Ohlsson & R. Catrambone (Eds), Proceedings of the 32nd Annual Conference of the Cognitive Science Society, Cognitive Science Society, Austin, TX, pp. 1325-1329. [Pdf]
[2009] Ellis Wubs, Petra Hendriks, John Hoeks & Charlotte Koster. Tell me a story! Children's capacity for topic shift. In: Jean Crawford, Koichi Otaki, & Masahiko Takahashi (Eds), Proceedings of the 3rd Conference on Generative Approaches to Language Acquisition North America (GALANA 2008), Cascadilla Proceedings Project, Somerville, MA, pp. 313-324.
[2009] Jacolien van Rij, Petra Hendriks, Jennifer Spenader & Hedderik van Rijn. Modeling the selective effects of slowed-down speech in pronoun comprehension. In: Jean Crawford, Koichi Otaki, & Masahiko Takahashi (Eds), Proceedings of the 3rd Conference on Generative Approaches to Language Acquisition North America (GALANA 2008), Cascadilla Proceedings Project, Somerville, MA, pp. 291-302.
[2009] Petra Hendriks. Empirical evidence for embodied semantics. In: Maria Aloni, Harald Bastiaanse, Tikitu de Jager, Peter van Ormondt & Katrin Schulz (Eds), Pre-proceedings of the Seventeenth Amsterdam Colloquium. ILLC/Department of Philosophy, University of Amsterdam, Amsterdam, pp. 1-10.
[2009] Jacolien van Rij, Petra Hendriks & Hedderik van Rijn. Integrating discourse in a computational model of the production and comprehension of referring expressions. In: Kees van Deemter, Albert Gatt, Roger van Gompel & Emiel Krahmer (Eds), Proceedings of the PRE-CogSci 2009 workshop on Production of Referring Expressions: Bridging the gap between computational and empirical approaches to reference. [Pdf]
[2009] Jacolien van Rij, Petra Hendriks, Jennifer Spenader & Hedderik van Rijn. From group results to individual patterns in pronoun comprehension. In: J. Chandlee, M. Franchini, S. Lord & M. Rheiner (Eds), Proceedings of the 33rd annual Boston University Conference on Language Development (BUCLD 33, Vol. 2), Cascadilla Press, Somerville, MA, pp. 563-574. [Pdf]
[2008] Petra Hendriks. A unified explanation for production/comprehension asymmetries. In: Anna Gavarró Algueró & M. João Freitas (Eds), Proceedings of GALA 2007, Cambridge Scholars Publishing, Newcastle upon Tyne, UK, pp. 240-251. [Pdf]
[2008] Petra Hendriks, Jennifer Spenader, & Erik-Jan Smits. Frequency-based constraints on reflexive forms in Dutch. In: Jørgen Villadsen & Henning Christiansen (Eds), Proceedings of the 5th International Workshop on Constraints and Language Processing (CSLP 2008), Computer Science Research Reports, #122, Roskilde University, Denmark, pp. 33-47.
[2007] Petra Hendriks, Irene Siekman, Erik-Jan Smits, & Jennifer Spenader. Pronouns in competition: Predicting acquisition delays cross-linguistically. In: Dagmar Bittner & Natalia Gagarina (Eds), ZAS Papers in Linguistics, Volume 48 (Intersentential Pronominal Reference in Child and Adult Language. Proceedings of the Conference on Intersentential Pronominal Reference in Child and Adult Language), pp. 75-101. [Pdf]
[2007] John C.J. Hoeks, Petra Hendriks, & Gisela Redeker. Prosody, context, and thematic fit meet "Gapping": The interaction of multiple constraints in spoken sentence comprehension. In: D. S. McNamara & J. G. Trafton (Eds), Proceedings of the 29th Annual Cognitive Science Society, Cognitive Science Society, Austin, TX, pp. 1085-1090. [Pdf]
[2007] Gerlof Bouma, Petra Hendriks, Helen de Hoop, Irene Krämer, Henriëtte de Swart, & Joost Zwarts. Conflicts in interpretation. In: Gerlof Bouma, Irene Krämer & Joost Zwarts (Eds), Cognitive Foundations of Interpretation. Proceedings of the Colloquium, 27-28 October 2004, Amsterdam, Royal Netherlands Academy of Arts and Sciences, Amsterdam, pp. 39-68. [Pdf]
[2006] John Hoeks, Petra Hendriks, & Louisa Zijlstra. The predominance of nonstructural factors in the processing of gapping sentences. In: R. Sun (Ed.), Proceedings of the 28th Annual Conference of the Cognitive Science Society, pp. 1511-1516. [Pdf]
[2006] Marieke van der Feen, Petra Hendriks, & John Hoeks. Constraints in language processing: Do grammars count? In: Proceedings of the 3rd Workshop on Constraints and Language Processing (CSLP-06), Sydney, Association for Computational Linguistics, pp. 1-8. [Pdf]
[2006] G.A. ten Holt, Petra Hendriks, T.C. Andringa, E.A. Hendriks, & M.J.T. Reinders. Automatic Recognition of Dutch Sign Language. In: B.P.F. Lelieveldt, B. Haverkort, C.T.A.M. de Laat, & J.W.J. Heijnsdijk (Eds), Proceedings of the twelfth annual conference of the Advanced School for Computing and Imaging, Lommel, Belgium, June 14-16, 2006, published by ASCI, Delft, pp 157-164. [Pdf]
[2005] Petra Hendriks, Helen de Hoop, & Monique Lamers. Asymmetries in language use reveal asymmetries in the grammar. In: Paul Dekker & Michael Franke (Eds), Proceedings of the 15th Amsterdam Colloquium, ILLC, Amsterdam, pp. 113-118. [Pdf]
[2005] Joost Zwarts, Petra Hendriks, & Helen de Hoop. Comparative paths to an optimal interpretation. In: Emar Maier, Corien Bary, and Janneke Huitink (Eds), Proceedings of Sinn und Bedeuting 9, NCS, Nijmegen, pp. 553-563. [Pdf]
[2005] Petra Hendriks & Jennifer Spenader. Why be silent? Some functions of ellipsis in natural language. In: Jennifer Spenader & Petra Hendriks (Eds), Proceedings of the ESSLLI '05 Workshop on Cross-Modular Approaches to Ellipsis, Heriot-Watt University, Edinburgh, pp. 29-36. [Pdf]
[2005] Feikje Hielkema, Mariët Theune, & Petra Hendriks. Generating ellipsis using discourse structures. In: Jennifer Spenader & Petra Hendriks (Eds), Proceedings of the ESSLLI '05 Workshop on Cross-Modular Approaches to Ellipsis, Heriot-Watt University, Edinburgh, pp. 37-44. [Pdf]
[2005] John Hoeks & Petra Hendriks. Optimality Theory and human sentence processing: The case of coordination. In: B.G. Bara, L. Barsalou, and M. Bucciarelli (Eds), Proceedings of the 27th Annual Meeting of the Cognitive Science Society, Erlbaum, Mahwah, NJ, pp. 959-964. [Pdf]
[2005] Lisette Mol, Niels Taatgen, Rineke Verbrugge, & Petra Hendriks. Reflective cognition as a secondary task. In: B.G. Bara, L. Barsalou, and M. Bucciarelli (Eds), Proceedings of the 27th Annual Meeting of the Cognitive Science Society, Erlbaum, Mahwah, NJ, pp. 1525-1530. [Pdf]
[2005] Lisette Mol, Rineke Verbrugge, & Petra Hendriks. Learning to reason about other people's minds. In: Proceedings of the Joint Symposium on Virtual Social Agents, SSAISB 2005 Convention, AISB (The Society for the Study of Artificial Intelligence and the Simulation of Behavior), University of Hertfordshire, Hatfield. [Pdf]
[2004] Petra Hendriks & Jennifer Spenader. A bidirectional explanation of the pronoun interpretation problem. In: P. Schlenker & E. Keenan (Eds), Proceedings of the ESSLLI '04 Workshop on Semantic Approaches to Binding Theory, Nancy, France. [Pdf]
[2004] Reinhard Blutner, Petra Hendriks, Helen de Hoop, & Oren Schwartz. When compositionality fails to predict systematicity. In: Simon D. Levy & Ross Gayler (Eds), Compositional Connectionism in Cognitive Science. Papers from the AAAI Fall Symposium. Technical Report FS-04-03, pp. 6-11. [Pdf]
[2004] Sybrand van der Werf & Petra Hendriks. A constraint-based approach to grouping in language and music. In: R. Parncutt, A. Kessler, & F. Zimmer (Eds), Proceedings of the Conference on Interdisciplinary Musicology (CIM04), Graz, Austria. [Pdf]
[2003] Reinhard Blutner, Petra Hendriks, & Helen de Hoop. A new hypothesis on compositionality. In: Peter P. Slezak (Ed.), Proceedings of the Joint International Conference on Cognitive Science, Sydney, Australia, pp. 53-57. [Pdf]
[2000] Petra Hendriks. The problem with logic in the logical problem of language acquisition. In: Lila R. Gleitman & Aravind K. Joshi (Eds), Proceedings of the 22nd Annual Meeting of the Cognitive Science Society. Institute for Research in Cognitive Science, University of Pennsylvania, Philadelphia, PA, pp. 220-225.
[2012] Petra Hendriks, Helen de Hoop & Henriëtte de Swart. The interplay between the speaker's and the hearer's perspective. Introduction to special issue on the interplay between the speaker's and the hearer's perspective. Journal of Logic, Language and Information 21:1. [Pdf]
[2010] Petra Hendriks. Empirical evidence for embodied semantics. In: Maria Aloni, Harald Bastiaanse, Tikitu de Jager & Katrin Schulz (Eds), Logic, Language and Meaning. Lecture Notes in Artificial Intelligence (LNAI) 6042, Springer, Heidelberg, pp. 1-10. [Pdf]
[2010] Petra Hendriks. What does eye-tracking reveal about children's knowledge of linguistic structure? In: Jan-Wouter Zwart & Mark de Vries (Eds), Structure Preserved: Studies in syntax for Jan Koster, Linguistik Aktuell/Linguistics Today 164, John Benjamins, pp. 149–156. [Pdf]
[2010] Petra Hendriks & Charlotte Koster. Production/comprehension asymmetries in language acquisition. Introduction to special issue on asymmetries in language acquisition. Lingua 120:8, 1887-1897. [Pdf]
[2006] Jennifer Spenader & Petra Hendriks. Combining multiple information sources for ellipsis. Introduction to special issue on cross-modular approaches to ellipsis. Research on Language and Computation 4:4, 327-333. [Pdf]
[2005] Petra Hendriks. Coordination. In: Philipp Strazny (Ed.), Encyclopedia of Linguistics, Fitzroy Dearborn, New York, pp. 240-241. [Pdf]
[2003] Petra Hendriks. "Either" as a focus particle. Unpublished manuscript, University of Groningen. Draft, May 2003. [Pdf]
[2001] Petra Hendriks. Strijdige regels, duidelijke taal. Natuur & Techniek 69:4, 40-45. [Link]
[2000] Petra Hendriks, Helen de Hoop, & Henriëtte de Swart. Guest Editors' Introduction to special issue on optimization of interpretation. Journal of Semantics 17:3, 185-187.
[2000] Tinie Alma, Tjeerd Andringa, Gosse Bouma, Petra Hendriks, Mathijs Homminga, Henk Mastebroek, Jeroen Meijer, Erwin Mulder, Thomas van Noort, Gerard Renardel de Lavalette, Esther Stiekema, Niels Taatgen, Wouter Teepe, Rineke Verbrugge, Esther Wiersinga & Ronald Zwaagstra. Moord in het Heymansgebouw ("Murder in the Heymans Building"). Groningen. [Available at the Social Sciences library of the University of Groningen]
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