@incollection{BittnerKoepcke2013,
  author    = {Dagmar Bittner and Klaus-Michael K{\"o}pcke},
  title     = {On the acquisition of the german plural markings},
  booktitle = {Zentrum f{\"u}r Allgemeine Sprachwissenschaft, Sprachtypologie und Universalienforschung, Berlin, 2001; ZAS papers in linguistics Vol. 21},
  volume    = {21},
  url       = {http://www.zas.gwz-berlin.de/fileadmin/material/ZASPiL_Volltexte/zp21/zaspil21-bittner-koepcke.pdf},
  year      = {2013},
}