00548naa#a2200169#i#450# EN\\bibl\12212 20240505022535.7 1995-042X 20160922b2016####ek#y0engy0150####ca RUS RU Tourism cluster as a base of regional tourism development (Belgorod region as an example) Journal article CHERKIZOVO Russian State University of Tourism and Service 2016 13 с. Journal article local Komarova Marina service-rusjournal.editorum.ru