00468naa#a2200169#i#4500001002200000005001700022011001400039100004100053101000800094102000700102200006700109210005100176215001000227608002700237700001900264856001500283EN\INFRA-M\bibl\1198220241224114130.2##a2308-4898##a20160618b2016####ek#y0engy0150####ca0#aRUS##aRU1#aDupin Cyclide and Second-Order Curves. Part 1eJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2016##a9 с.##aJournal article2local#1aSal'kovgN. A.4#anaukaru.ru