The Oka hydrothermal system, East Sayan mountains.Published in:Journal of Volcanology & Seismology, 2013, v. 7, n. 4, p. 265, doi. 10.1134/S0742046313040027By:Badminov, P.;Ivanov, A.;Pisarskii, B.;Orgil'yanov, A.Publication type:Article