00475naa#a2200169#i#450# EN\RIOR\bibl\13472 20250109052843.4 2500-1469 20161102b2016####ek#y0engy0150####ca RUS RU Methods of assessing the quality of services: comparative analysis Journal article Moscow Publishing Center RIOR 2016 8 с. Journal article local Vatolkina N naukaru.ru