00496naa#a2200169#i#450# EN\INFRA-M\bibl\14814 20241003231054.4 2500-0527 20161130b2016####ek#y0engy0150####ca RUS RU Methods of cash flow analysis organizations in gas industry Journal article Moscow INFRA-M Academic Publishing LLC. 2016 0 с. Journal article local Trofimova Lyudmila Borisovna zh-szf.ru