Iordanov, I., Y. Simonova, Y. Novikova, A. Korol, Y. Podkopayev, and O. Kayun. “Substantiation of Conditions of Maintaining Stability of Haulage Drifts During Development of Steep Seams”. Technology Audit and Production Reserves, vol. 3, no. 1(53), June 2020, pp. 23-26, doi:10.15587/2706-5448.2020.206009.