NIKITIN, Oleg. MONITORING AND ANALYSIS OF ROOM-AND-PILLAR MINING WITH CONTINUOUS MINER IN ESTONIAN OIL SHALE MINES. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, Rezekne, Latvia, v. 1, p. 116–121, 2001. DOI: 10.17770/etr2001vol1.1944. Disponível em: https://journals.rta.lv/index.php/ETR/article/view/1944.. Acesso em: 4 may. 2024.