Logunova, ОleksandraОleksandraLogunovaGapeev, S.N.S.N.GapeevPoperechna, N.V.N.V.Poperechna2017-03-292017-03-292013http://ir.nmu.org.ua/handle/123456789/148936enPermeability of the Coal and Rock Mass with an Artificial CavityArticle