00493naa#a2200169#i#450# EN\\bibl\11735 20250322132557.6 1993-7768 20160704b2016####ek#y0engy0150####ca RUS RU System synthesis of the agritourism category Journal article CHERKIZOVO Russian State University of Tourism and Service 2016 8 с. Journal article local Dyachenko Aleksandr rguts.editorum.ru