00532naa#a2200169#i#450# EN\\bibl\14760 20241113114423.3 1993-7768 20161222b2016####ek#y0engy0150####ca RUS RU Substantiation of the indicators system of the quality of hotel sports and recreational services Journal article CHERKIZOVO Russian State University of Tourism and Service 2016 9 с. Journal article local Topolnik Vera zh-szf.ru