Shawky, Y. A. ., A. . Hussein, O. G. . Salman, and A. A. . Eid. “Comparative Protective Efficiency of Different Stabilizers for Live Newcastle Disease Virus Vaccine Production”. Journal of Advanced Veterinary Research, vol. 12, no. 6, Nov. 2022, pp. 658-64, https://advetresearch.com/index.php/AVR/article/view/1075.