1. Über das Butteraroma;van Niel;Biochem. Z.,1929
2. Bidrag til Syrevaekkernes Bakteriologi;Knudsen;Kgl. Vet. og Landbofisjskole Aarskr,1929
3. Üoer den Einfluss der Milchsaure auf die Milchsauregarung;van Dam;Biochem. Z.,1918
4. The casein-splitting properties of starter;Barthel;Report of the World's Dairy Congress,1928
5. The volatile acid production of starters and of organisms isolated from them;Hammer;Iowa Agr. Exp. Sta. Research Bull,1919