El-Mohamedy, R. S. R., El-Gamal, N. G., El-Shamy, A. R., and Atalla, S. M. M., “Biosynthesis of Zinc Nanoparticles and Its Effect on Enzymes Production by Bacillus subtilis and Pseudomonus flourescens Using Different Agricultural Wastes”, Int. J. Agric. Tech., vol. 14, no. 6, pp. 833–844, Nov. 2018.