.

Tokarev , I. V. 2008. “Use of Isotope Data (δ2H, δ18O, 234U/238U) in the Study of Permafrost Degradation Processes As a Result of Long-Term Climate Variations”. Journal of Mining Institute 176 (March), 191-95. https://pmi.spmi.ru/pmi/article/view/7313.