00523naa#a2200169#i#450# EN\INFRA-M\bibl\10432 20250127120038.1 2306-627X 20150618b2015####ek#y0engy0150####ca RUS RU Features of Competitiveness Calculation of Services Drawing on the Example of "Aeroflot" Journal article Moscow INFRA-M Academic Publishing LLC. 2015 9 с. Journal article local Morgunova Yelyena zh-szf.ru