Artés, Joan C.(E-BARA); Llibre, Jaume(E-BARA); Vulpe, Nicolae(MO-AOS-MI) Quadratic systems with a polynomial first integral: a complete classification in the coefficient space $Bbb R^{12}$. (English summary) J. Differential Equations 246 (2009), no. 9, 3Mencinger, Matej (Avtor) kvadratični sistemi20092012-05-31 13:54:41Neznano26516UDK: 517(049.3)COBISS_ID: 13705750ISSN pri članku: Y505-9674NUK URN: URN:SI:UM:DK:EUDNPFT0sl