1. Studies on the microbiology of some fermented milks in Egypt;Abd-El-Malek,1970
2. Zur Taxonomie der Gattung Lactobacillus Beijerinck 1;Abo-Elnaga;Das Subgenus Streptobacterium Orla Jensen. Zbl. Bakt., Il. Abt,1965
3. Zur Taxonomie der Gattung Lactobacillus Beijerinck.11;Abo-Elnaga;Das Subgenus Betabacterium Orla Jensen. Al. Bakt., II. Abt,1965
4. Changes in the bacterial content of raw milk during storage in the presence of cooking salt;Abo-Elnaga;Zbl. Bakt. Hyg., I. Abt. Orig. B,1974
5. Bergey's Manual of Determinative Bacteriology;Breed,1957