T. . Istomina, T. . Tiunova, T. . Oshchepkova, and S. . Astaf'yeva, “Intumescent materials for heat-shielding of constructions operating under extreme conditions”, ВПФИЦ, no. 4, pp. 8–14, Jul. 2018, doi: 10.7242/1998-2097/2017.4.1.