00477naa#a2200169#i#450# EN\INFRA-M\bibl\39072 20260117233451.6 2308-4898 20200817b2020####ek#y0engy0150####ca RU In Favor of Imaginaries in Geometry Journal article Moscow INFRA-M Academic Publishing LLC. 2020 7 с. Journal article local Математика. 51 Girsh A. G. naukaru.ru