@incollection(heeringa:01,
	      author    = {Wilbert Heeringa and John Nerbonne and
                          Peter Kleiweg},
	      title     = {Validating Dialect Comparison Methods},
	      booktitle = {Proceedings of the 24th Annual Meeting of the
                           Gesellschaft f\"ur Klassifikation},
	      publisher = {Springer},
	      address   = {Heidelberg},
	      editor    = {Wolfgang Gaul and Gerd Ritter},
              note      = {submitted},
	      pages     = {},	      
	      year      = {to appear, 2001}
	      )