00615naa#a2200181#i#450# EN\\bibl\22128 20250122201625.3 2312-4431 20181227b2018####ek#y0engy0150####ca RUS RU SPECIAL ASPECTS OF TRAINING MATHEMATICS IN THE UNIVERSITIES OF ECONOMICS Journal article Cheboksary Non-state educational private institution of additional professional education "Expert-methodological centre" 2018 5 с. Journal article local Ryaysyanen Tatyana N. Ulengova Tatyana G. naukaru.ru