Schmitter, Beat M., and Toni Rihs. 1997. “Feed Stuffs Analysis at the Swiss Federal Research Station for Animal Production (RAP), Posieux : Die Futtermittelanalytik an Der Eidgenössischen Forschungsanstalt für Nutztiere (RAP) in Posieux”. CHIMIA 51 (10): 777. https://doi.org/10.2533/chimia.1997.777.