00497naa#a2200169#i#450# EN\\bibl\8111 20240516234616.4 1999-5644 20151201b2015####ek#y0engy0150####ca RUS RU Innovation management companies in the fuzzy set theory Journal article CHERKIZOVO Russian State University of Tourism and Service 2015 4 с. Journal article local Mosalev Anton rguts.editorum.ru