00580naa#a2200193#i#450# EN\\bibl\888 20260118195341.7 1995-042X 20131225b2013####ek#y0engy0150####ca RUS RU CLUSTER APPROACH AS A TOOL FOR SUSTAINABLE TOURISM DEVELOPMENT STRATEGY Journal article CHERKIZOVO Russian State University of Tourism and Service 2013 8 с. Journal article local Ginosyan Kristine Bolshakov Aleksey Khavanova Natalya zh-szf.ru