1. Dynamical Systems V, Bifurcation Theory and Catastrophe Theory;Arnold,1993
2. Oscillations in a prey-predator-superpredator system;Boudjellaba;J. Biol. Systems,1998
3. Mathematical Bioeconomics, The Optimal Management of Renewable Resources;Clark,1976
4. Ducks and rivers : three existence results;Diener,1995
5. Canard cycles and center manifolds;Dumortier;Mem. Amer. Math. Soc.,1996