ArtÃculos de Gasull, Armengol
A polynomial class of Markus-Yamabe counterexamples.
(0214-1493)
Limit cycles in the Holling-Tanner model.
(0214-1493)
Quadratic systems with a unique finite rest point.
(0214-1493)
A characterization of isochronous centres in terms of symmetries.
(0213-2230)
Simple examples of one-parameter planar bifurcations.
(0213-8743)