@inbook{95dad9c7410f4ace86e70bfbf169020b,
title = "One or two phonemes: /{\o}/-/u/ in Old French, /s/-/z/ in Dutch and Frisian - New solutions to an old problem",
author = "{van Reenen}, P.T. and A. Jongkind",
year = "2005",
language = "English",
series = "Usage-Based Linguistic Informatics",
publisher = "Benjamins",
number = "1",
pages = "9--28",
editor = "Y. Kawaguchi and S. Zaima and T. Takagaki and K. Shibano and M. Usami",
booktitle = "Linguistics Informatics: State of the Art and the Future",
}