*Taran Y.A., Connor C.B., Shapar V.N., Ovsyannikov A.A., Bilichenko A.A. (1997), "Fumarolic activity of Avachinsky and Koryaksky volcanoes, Kamchatka, from 1993 to 1994", Bulletin of Volcanology, v. 58, p. 441-448.
*Taran Y.A., Connor C.B., Shapar V.N., Ovsyannikov A.A., Bilichenko A.A. (1997), "Fumarolic activity of Avachinsky and Koryaksky volcanoes, Kamchatka, from 1993 to 1994", Bulletin of Volcanology, v. 58, p. 441-448.