Inhibitory effects of freeze-dried milk fermented by selected Lactobacillus bulgaricus strains on carcinogenesis induced by1,2-dimethylhydrazine in rats and by diethylnitrosamine in hamsters - Balansky,R.; Gyosheva,B.; Ganchev,G.; Mircheva,Z.; Minkova,S.; Georgiev,G. (Cancer Lett., 1999)