1. Dynamics of a predator-prey model with non-monotonic response function,  Discrete  and Continuous Dynamical Systems 18(2&3) (2007), 221-251. (with H.W. Broer, V. Naudot and R. Roussarie)

2. Bifurcation of a predator-prey model with non-monotonic response function, Regular and Chaotic Dynamics 11 (2) (2006), 155-165. (with H.W. Broer, V. Naudot and R. Roussarie)

3. Dynamics of a predator-prey model with non-monotonic response function, C.R. Acad.Sci. Paris Ser. I 341 (2005), 601-604. (with H.W. Broer, V. Naudot and R. Roussarie)

4. Organising centres in the semi-global analysis of dynamical systems, IJAMAS Special issues on Euler volume 12 (D07) (2007), 7-36. (with H.W. Broer, V. Naudot, R. Roussarie and F.O.O Wagener)

5. Semi-global analysis of normal-internal k : 1 and k : 2 resonances, Submitted for publication in Nonlinearity (2008). (with F.O.O Wagener)

Organising centres in the semi-global analysis of dynamical systems, under direction of H.W. Broer, Dec 2005.