@incollection{Żygis2013,
  author    = {Marzena Żygis},
  title     = {Phonetic and phonological aspects of slavic sibilant fricatives},
  booktitle = {Papers in phonology \& phonetics / ed. by T. A. Hall \& Silke Hamann, Zentrum f{\"u}r Allgemeine Sprachwissenschaft, Sprachtypologie und Universalienforschung, Berlin, 2000; ZAS papers in linguistics Vol. 32},
  volume    = {32},
  url       = {http://www.zas.gwz-berlin.de/196.html?\&L=0},
  year      = {2013},
}