Naboko S.I., Glavatskikh S.F. (1991) The Behaviour of Cu, Zn, and Pb in Modern Volcanic Processes: Implications for the Genesis of Sulphide Deposits // Volcanology and Seismology. Vol. 12, No. 2. pp. 214-240.

Braitseva O.A., Melekestsev I.V., Bogoyavlenskaya G.E., Maksimov A.P. (1991) Bezymyannyi: Eruptive History and Dynamics // Volcanology and Seismology. Vol. 12, No. 2. pp. 165-194.

Tokarev P.I. (1991) Dynamics and Large Deformations of Volcanoes // Volcanology and Seismology. Vol. 12, No. 2. pp. 241-259.

Kirianov V.Yu., Solovieva N.A. (1991) Lateral variations in ash composition due to Eolian differentiation // Volcanology and Seismology. Vol. 12, No. 4. pp. 431-442.

Girina O.A. (1991) Pyroclastic deposits of the Bezymianny eruption in October 1984 // Volcanology and Seismology. Iss. 12. No. 3. pp. 407-417.

Felitsyn S.B., Vaganov P.A., Kirianov V.Yu. (1991) Trace Element Distribution in Kamchatkan Ashes from Instrumental Neutron Activation Analysis // Volcanology and Seismology. Vol. 12, No. 2. pp. 195-213.

Zharinov N.A., Gorelchik V.I., Belousov A.B., Belousova M.G., Garbuzova V.T., Demyanchuk Yu.V., Zhdanova E.Yu. (1991) Volcanic eruptions and seismic activity at Klyuchevskoi, Bezymiannyi and Shiveluch in 1986-1987 // Volcanology and Seismology. Vol. 12, Iss. 3. pp. 327-345.