Roussarie, R. (1998). Bifurcation of planar vector fields and Hilbert's sixteenth problem. Birkhauser.
Cita Chicago (17th ed.)Roussarie, Robert. Bifurcation of Planar Vector Fields and Hilbert's Sixteenth Problem. Basilea: Birkhauser, 1998.
Cita MLA (9th ed.)Roussarie, Robert. Bifurcation of Planar Vector Fields and Hilbert's Sixteenth Problem. Birkhauser, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.