00486naa#a2200169#i#450# EN\\bibl\4007 20240514004051.2 1993-7768 20141203b2014####ek#y0engy0150####ca RUS RU Standardization in service audit Journal article CHERKIZOVO Russian State University of Tourism and Service 2014 7 с. Journal article local Vapnyarskaya Olga Igorevna rguts.editorum.ru