1. Preservation of lactic cultures;Baumann;J. Dairy Sci,1964
2. Bacterial survival in suspension in polyethylene-glycol solutions;Cox;J. Gen. Microbiol,1966
3. Medium for the cultivation of Lactobacilli;De Man;J. Appl. Bacteriol,1960
4. Dairy Products and Eggs. Recent Developments;Gutcho,1978
5. Fallacy of “crushing death” in frozen bacterial suspension;Harrison,1956