1. A criterion for the non-existence of an additional integral in Hamiltonian systems with a homogeneous potential;Yoshida;Physica D,1987
2. Branching of solutions and non-existence of first integrals in Hamiltonian mechanics I;Ziglin;Functional Anal. Appl.,1983
3. Branching of solutions and non-existence of first integrals in Hamiltonian mechanics II;Ziglin;Functional Anal. Appl.,1983
4. H. Yoshida, Ziglin analysis for proving non-integrability of Hamiltonian system, in: P.G.L. Leach, W.H. Steeb (Eds.), Finite Dimensional Integrable Non-linear Dynamical Systems, World Scientific, Singapore, 1988, pp. 74–93.
5. J.J. Morales-Ruiz, J.P. Ramis, A note on the non-integrability of some Hamiltonian systems with a homogeneous potential, Preprint (1997). e-mail : morales@grec.upc.es