00547naa#a2200181#i#450# EN\INFRA-M\bibl\31 20240715173038.1 2587-6279 20121115b2012####ek#y0engy0150####ca RUS RU Risk analysis of oil and gas projects: possible problems, approaches to solving Journal article Moscow INFRA-M Academic Publishing LLC. 2012 0 с. Journal article local Demkin Igor Vyacheslavovich Lesnykh Valeriy naukaru.ru