Abdelsabour, M. A. ., A. M. . Helal, E. M. El Nagar, Walaa Abd El-fatah, Samah El Sayed Ali Abodalal, Y. M. . Madbouly, A. A. . Arafa, H. M. . Ibrahim, and A. . Hussein. “Efficacy of a Locally Prepared Live Clone Vaccine Against Newcastle Disease Virus Genotype IV and Genotype VIId in Egypt: Clone 30 Vaccine”. Journal of Advanced Veterinary Research, vol. 14, no. 4, Apr. 2024, pp. 639-43, https://advetresearch.com/index.php/AVR/article/view/1746.