00508naa#a2200169#i#450# EN\INFRA-M\bibl\53354 20260322162635.7 2308-4898 20220630b2022####ek#y0engy0150####ca RU Demonstration of Common Elements of Involution on a Simple Example Journal article Moscow INFRA-M Academic Publishing LLC. 2022 7 с. Journal article local Геометрия. 514 Umbetov N. S. zh-szf.ru