00554naa#a2200181#i#450# EN\\bibl\2156 20241101042540.5 1999-5644 20140527b2014####ek#y0engy0150####ca RUS RU Moscow regional education cluster in tourism and service Journal article CHERKIZOVO Russian State University of Tourism and Service 2014 5 с. Journal article local Fedulin Aleksandr Sakharchuk Elena Sergeevna vestnik-rguts.editorum.ru