00571naa#a2200181#i#450# EN\INFRA-M\bibl\49713 20250311092210.2 2308-4898 20220414b2022####ek#y0engy0150####ca RU Point Tools of Geometric Modeling, Invariant Relating to Parallel Projection Journal article Moscow INFRA-M Academic Publishing LLC. 2022 10 с. Journal article local Математика. 51 Konopatskiy Evgeny Viktorovich Bezditnyi A. A. naukaru.ru