1. Bacillus bulgaricus;Grigoroff;Revue medicale de la Suisse romande,1905
2. Quelgues mots sur le lactobacille;Metchnikoff;Comptes rendus de l’Academie des Sciences,1908
3. Lactic acid bacteria in Bulgarian sour milk. The effect of some chemical and physical factors on the antimicrobial activity of Lactobacterium bulgaricum strain;Nachev;Izv Mikrobiol Inst (Sofiia),1972
4. Objective evaluation of the aroma and taste of Bulgarian sour milk;Kondratenko;Antibiotiki,1972
5. Influences of lactic acid bacteria on animal bodies. Amino acids requirement of lactic acid bacteria in culture medium;Nakamura;Kitasato Arch Exp Med,1971