00448naa#a2200169#i#4500001002000000005001700020011001400037100004100051101000800092102000700100200004900107210005100156215001000207608002700217700001900244856001500263EN\INFRA-M\bibl\27120241212175315.4##a2308-4898##a20130603b2013####ek#y0engy0150####ca0#aRUS##aRU1#aEllipse: tangent and normaleJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2013##a2 с.##aJournal article2local#1aSal'kovgN. A.4#anaukaru.ru