00630naa#a2200181#i#450# EN\\bibl\11915 20260326223946.4 1995-042X 20160616b2016####ek#y0engy0150####ca RUS RU The implementation of sustainable development principles in order to optimize the system of competitiveness of tourist destinations Journal article CHERKIZOVO Russian State University of Tourism and Service 2016 13 с. Journal article local Rassokhina Tatyana Lebedev Konstantin service-rusjournal.editorum.ru