00571naa#a2200181#i#450# EN\\bibl\10492 /en/manage/index 20250204232056.2 1995-042X 20150316b2015####ek#y0engy0150####ca RUS RU Customer-oriented approach as a key effectiveness driver of tourism enterprises Journal article CHERKIZOVO Russian State University of Tourism and Service 2015 10 с. Journal article local Konovalova Elena fht.editorum.ru /en/manage/index