1. AdS, 1977. Atlas der Schweiz. Eidgenössische Landestopographie, Wabern-Bern, Table 20.
2. AdS, 2000. Atlas of Switzerland—Interactive CD, version 1.0. Swiss Federal Office of Topography, Wabern.
3. Lobsigensee—Late-Glacial and Holocene environments of a lake on the Central Swiss Plateau. Introduction and palynology;Ammann;Dissertationes Botanicae,1985
4. Late-Quaternary palynology at Lobsigensee. Regional vegetation history and local lake development;Ammann;Dissertationes Botanicae,1989
5. Switzerland;Ammann,1996