00479naa#a2200169#i#450# EN\INFRA-M\bibl\4181 20241107110341.4 2587-9111 20141217b2014####ek#y0engy0150####ca RUS RU Econometric Models for Tourism Management System Improvement Journal article Moscow INFRA-M Academic Publishing LLC. 2014 6 с. Journal article local Turaev B. naukaru.ru