@incollection{'Bos2008IGS',
   title     = {'Der Sperber in "S{\\"u}dost Saarland"'},
   author    = {'Bos', 'Johan'},
   booktitle = {'Der Sperber in Deutschland'},
   publisher = {'Books on Demand GmbH'},
   address   = {'Norderstedt'},
   pages     = {281--292},
   year      = {2008}
}