Ismailovich, S. D. ., S. Z. . Jaxongirovna, R. O. . Raxmatullaevich, and B. R. I. . o‘g‘li. “Improving the Prevention and Control of Newcastle Disease in Birds”. European Journal of Life Safety and Stability (2660-9630), vol. 14, Feb. 2022, pp. 9-12, http://ejlss.indexedresearch.org/index.php/ejlss/article/view/446.