Samigov Nigmatdzhon Abdurahimovich, Fayzulla Nurmuminovich Nurkulov, Sayfiddin Kodirovich Zhumaev. “Study Of Phosphorus-Containing Oligomeric Antipyrenes”. International Journal of Advanced Science and Technology, Vol. 29, no. 08, June 2020, pp. 1440 -47, http://sersc.org/journals/index.php/IJAST/article/view/21342.