00489naa#a2200169#i#450# EN\INFRA-M\bibl\5912 20240715143507.1 2587-6279 20150317b2015####ek#y0engy0150####ca RUS RU Classification of Project Management Mathematical Models Journal article Moscow INFRA-M Academic Publishing LLC. 2015 6 с. Journal article local Tsarkov Igor Nikolaevich naukaru.ru