00496naa#a2200169#i#450# EN\\bibl\8113 20240508163341.3 1999-5644 20151201b2015####ek#y0engy0150####ca RUS RU Leading world trends in tourism education Journal article CHERKIZOVO Russian State University of Tourism and Service 2015 10 с. Journal article local Sakharchuk Elena Sergeevna rguts.editorum.ru