00618naa#a2200169#i#450# EN\INFRA-M\bibl\37248 20260118023350.7 2587-9111 20200515b2020####ek#y0engy0150####ca RU To the Question of Constructing Effective Data Approximation Methods in the Tasks of Research and Forecasting of Economic Indicators Journal article Moscow INFRA-M Academic Publishing LLC. 2020 3 с. Journal article local Экономика. Экономические науки. 33 Grishina Svetlana naukaru.ru