Iordanov, I., Simonova, Y., Kayun, O., Podkopayev, Y., Polozhii, A. and Boichenko, H. 2020. Substantiation of the stability of haulage drifts with protective structures of different rigidity. Eastern-European Journal of Enterprise Technologies. 3, 7 (105) (Jun. 2020), 87–96. DOI:https://doi.org/10.15587/1729-4061.2020.202483.