00613naa#a2200205#i#450# EN\\bibl\11471 20241108071945.5 2308-4936 20160330b2016####ek#y0engy0150####ca RUS RU Evaluating RISK OF arising accidents by underground mining brown coal Journal article Tula LLC Information and publishing center Innovations and investments 2016 0 с. Journal article local Stas G. Perelygina Yanna Perelygin Igor Sheynkman Leonid zh-szf.ru