00562naa#a2200181#i#450# EN\INFRA-M\bibl\22477 20241116063209.6 2308-4898 20180821b2018####ek#y0engy0150####ca RUS RU A Unified Constructive Algorithm For Second- Order Curves’ Foci Creation Journal article Moscow INFRA-M Academic Publishing LLC. 2018 7 с. Journal article local Математика. 51 RUS Voloshinov Denis Vyacheslavovich naukaru.ru