@Book{1180188705,
author="Gygi, Reinhart A.",
title="Perisphinctacean ammonites of the late jurassic in northern Switzerland: a versatile tool to investigate the sedimentary geology of an epicontinental sea",
series="Schweizerische pal{\"a}ontologische Abhandlungen 123",
year="2003",
publisher="Kommission der Schweizerischen Pal{\"a}ontologischen Abhandlungen",
address="Basel",
note="by Reinhart A. Gygi",
language="English"
}