00560naa#a2200193#i#450# EN\INFRA-M\bibl\33626 20241012142855.6 2308-4898 20191202b2019####ek#y0engy0150####ca RUS RU Imaginary Points in Cartesian Coordinate System Journal article Moscow INFRA-M Academic Publishing LLC. 2019 7 с. Journal article local Математика. 51 RUS Girsh A. G. Korotkiy Viktor Anatol'evich naukaru.ru