00558naa#a2200181#i#450# EN\INFRA-M\bibl\3434 20241116072006.6 2308-4898 20140610b2014####ek#y0engy0150####ca RUS RU Generalized Dandelin’s Theorem Implementation for Arbitrary Rotation Quadrics in AutoCAD Journal article Moscow INFRA-M Academic Publishing LLC. 2014 5 с. Journal article local Kheyfets Aleksandr L'vovich Vasileva Vera naukaru.ru