00604naa#a2200169#i#450# EN\\bibl\12675 20240805125412.1 2308-8877 20160830b2016####ek#y0engy0150####ca RUS RU Organization and evaluation of the effectiveness of the internal control system of a tour operator Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2016 4 с. Journal article local Gizyatova Aliya naukaru.ru