00503naa#a2200169#i#450# EN\INFRA-M\bibl\248 20241125060718.1 1998-071X 20130625b2013####ek#y0engy0150####ca RUS RU Condition Forecasting of Underground Main Pipelines in Permafrost Regions Journal article Moscow INFRA-M Academic Publishing LLC. 2013 6 с. Journal article local Kotlyarevskiy Vladimir zh-szf.ru