Yehia H, M., D. M. . Abulmagd, M. H. Atwa, N. . Ezz El-Deen, and T. . Abd El-Fattah. “Nanoparticles As Immune Modulatory Reagents for Production of Rift Valley Fever Hyperimmune Serum in Sheep”. Journal of Advanced Veterinary Research, vol. 13, no. 3, June 2023, pp. 421-4, https://advetresearch.com/index.php/AVR/article/view/1330.