00553naa#a2200181#i#4500001002200000005001700022011001400039100004100053101000800094102000700102200009200109210005100201215001100252608002700263675003400290700003300324856001400357EN\INFRA-M\bibl\1734920240927044727.5##a2308-4898##a20170704b2017####ek#y0engy0150####ca0#aRUS##aRU1#aConics As Sections of Quadrics by Plane (Generalized Dandelin Theorem)eJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2017##a13 с.##aJournal article2local##aМатематика. 51zRUS#1aKheyfetsgAleksandr L'vovich4#azh-szf.ru