00492naa#a2200169#i#450# EN\INFRA-M\bibl\49712 20240521164324.2 2308-4898 20220414b2022####ek#y0engy0150####ca RU New Problems of Descriptive Geometry. Continuation Journal article Moscow INFRA-M Academic Publishing LLC. 2022 7 с. Journal article local Математика. 51 Girsh A. G. naukaru.ru