Ahmed F. El-Sayed, Nivien A. Abo-Sereih, Tahany M. El-Kawokgy, Abeer E. Mahmoud and Abbas A. El-Ghamery 2019. Isolation, screening and optimization of β-glucosidase producing Bacillus sp. isolated from Egyptian environment and optimization of β-glucosidase producing Bacillus sp. isolated from Egyptian environment. Journal of Innovations in Pharmaceutical and Biological Sciences. 6, 4 (Oct. 2019), 70–78.