00561naa#a2200181#i#450# EN\INFRA-M\bibl\6710 20241125143501.1 1998-0701 20131017b2013####ek#y0engy0150####ca RUS RU «EBITDA» – efficiency index of production and economic activity of the enterprise Journal article Moscow INFRA-M Academic Publishing LLC. 2013 3 с. Journal article local Grafova Galina Fedorovna Avrashkov Lyev Yakovlevich zh-szf.ru