00494naa#a2200169#i#450# EN\\bibl\4992 20250409015350.3 1995-042X 20141215b2014####ek#y0engy0150####ca RUS RU Service support for major sporting events Journal article CHERKIZOVO Russian State University of Tourism and Service 2014 8 с. Journal article local Butova Tatyana Georgievna rguts.editorum.ru