00515naa#a2200181#i#450# EN\\bibl\11730 20240808071225.4 1993-7768 20160704b2016####ek#y0engy0150####ca RUS RU Services in the field of scientific service Journal article CHERKIZOVO Russian State University of Tourism and Service 2016 5 с. Journal article local Kazarina Larisa Kazarina Marina naukaru.ru