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Bryan S.T., Hobart J., Warnock B., Rinehart J.S., Fenimore M., Colvin B. (1991) The Geysers of 'The Valley of Geysers'. A special report of GOSA Transactions . USA, California: B&J Printing. 60 p.
Leonov A., Leonov V., Hobart J. (2014) Valley of Geysers, Kronotsky Reserve, Kamchatka: features seen by the 1991 GOSA Expedition and Changed by the 2007 Landslide, 2013 Cyclone and 2014 Landslide // The Geyser Gazer Sput / The Newsletter of the Geyser Observation and Study Association (GOSA). Vol. 28, No. 2. pp. 5-26.