00563naa#a2200181#i#450# EN\INFRA-M\bibl\42401 20241223053426.1 2308-4898 20201230b2020####ek#y0engy0150####ca RU General Analysis of the Shape of Two Similar Second-Order Surfaces’ Intersection Line Journal article Moscow INFRA-M Academic Publishing LLC. 2020 10 с. Journal article local Математика. 51 Ivaschenko A. V. Vavanov D. zh-szf.ru