00515naa#a2200181#i#450# EN\\bibl\2337 20251218112138.4 1995-042X 20140528b2014####ek#y0engy0150####ca RUS RU Innovations for tourism and service enterprises Journal article CHERKIZOVO Russian State University of Tourism and Service 2014 9 с. Journal article local Konovalova Elena Silaeva Anna zh-szf.ru