The Rest r i ct ed Tan gen t Bun dl e of a Rat i on al Cur ve on a Quadr i c i n P 3 Aut h or (s): Mar i a- Gr azi a Ascen zi Sour ce: Pr oceedi ngs of t he Am er i can Mat hem at i cal Soci et y , Vol . 98, No. 4 (Dec., 1986), pp. 561566 Publ i shed by : Am er i can Mat hem at i cal Soci et y St abl e URL: ht t p:/ / ww w.jst or .or g/ st abl e/ 2045725 Accessed: 21- 03- 2016 15:30 UTC
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