00615naa#a2200193#i#450# EN\\bibl\11527 20240512235408.7 1995-042X 20160516b2016####ek#y0engy0150####ca RUS RU Approaches to the definition of concept "customer loyalty" in hospitality industry Journal article CHERKIZOVO Russian State University of Tourism and Service 2016 8 с. Journal article local Popravkina Anastasiya Morozova Lyubov Chernova Dzhavaniya rguts.editorum.ru