Song, H., J. Liu, F. Xue, and F. Cheng. “Flame Retardant Properties of Gas Sealing Materials Used in Coal Mines”. Polimery 61, no. 4 (January 24, 2021): 266-271. Accessed May 9, 2024. https://ichp.vot.pl/index.php/p/article/view/394.