BURENINA, Irina, EVTUSHENKO, Evgenii, KOTOV, Dmitry, BATTALOVA, Alena, MUKHAMETYANOVA, Guzel, AND GAMILOVA, Dilyara. " Associated Petroleum Gas: Problems, Prospects, Ways to Increase Its Effective Use" Journal of Environmental Management and Tourism [Online], Volume 8 Number 7 (25 February 2018)