1. Official methods of analysis;AOAC,1975
2. Effect of various factors on the biosynthesis of vitamin B12 from Propionibacterium shermanii;Beshkov,1969
3. Use of cheese whey for vitamin B12 production. I. Whey solids and yeast extract levels;Bullerman;Appl. Microbiol.,1966
4. Use of cheese whey for vitamin B12 production. II. Growth studies and dry weight activity;Bullerman;Appl. Microbiol.,1966