00498naa#a2200169#i#450# EN\INFRA-M\bibl\79 20240504133452.6 1998-071X 20121225b2012####ek#y0engy0150####ca RUS RU Assessment of Durability Resource of Bent Underground Main Pipelines Journal article Moscow INFRA-M Academic Publishing LLC. 2012 7 с. Journal article local Kotlyarevskiy Vladimir naukaru.ru