Frauenfeld, O. W., T. Zhang, R. G. Barry, and D. Gilichinsky. 2004. Interdecadal changes in seasonal freeze and thaw depths in Russia. Journal of Geophysical Research 109, D05101. doi:10.1029/2003JD004245.
Gilichinsky, D. A., R. G. Barry, S. S. Bykhovets, et. al. 1998. A century of temperature observations of soil climate: Methods of analysis and long-term trends, in Proceedings of 7th ... International Conference on Permafrost, edited by A. Lewkowicz and M. Allard, pp. 313-317, Cent. d'Etudes Nordiques, Univ. Laval, Ste-Foy, Canada.
State Committee of the U.S.S.R. for Hydrometeorology and Environmental Control. 1985. Instructions for meteorological stations and posts, in Meteorological Observations at Stations, vol. 3, part 1, Gidrometeoizdat, Leningrad.
Zhang, T., O. W. Frauenfeld, M. C. Serreze, et. al. 2005. Spatial and temporal variability in active layer thickness over the Russian Arctic Drainage Basin. Journal of Geophysical Research 100, D16101. doi:10.
Zhang, T., R. G. Barry, D. Gilichinsky, et. al. 2001. An amplified signal of climatic change in soil temperatures during the last century at Irkutsk, Russia. Climate Change 49, 41-76.