00509naa#a2200169#i#450# EN\INFRA-M\bibl\14856 20241018074247.5 2500-0527 20161225b2016####ek#y0engy0150####ca RUS RU The economic efficiency of the sports complex through the introduction of new services Journal article Moscow INFRA-M Academic Publishing LLC. 2016 0 с. Journal article local Kuzovleva I. naukaru.ru