00648naa#a2200193#i#450# EN\\bibl\12148 /en/manage/index 20250210013955.1 1995-042X 20160921b2016####ek#y0engy0150####ca RUS RU Development indicators of children and youth tourism in additional education system and sports tourism: Comparative analysis Journal article CHERKIZOVO Russian State University of Tourism and Service 2016 6 с. Journal article local Pavlov Evgeniy Belyakova Irina fht.editorum.ru /en/manage/index