00519naa#a2200181#i#450# EN\\bibl\769 20241203033013.2 1993-7768 20131211b2013####ek#y0engy0150####ca RUS RU Consulting Technologies as Employed by Agent Firms Journal article CHERKIZOVO Russian State University of Tourism and Service 2013 5 с. Journal article local Sulpovar Lev Bogacheva Tatyana naukaru.ru