Computation of normal forms of Hamiltonian systems in the presence of Poisson commuting integrals. - Jilali Mikram; Fouad Zinoun (Numer. Algorithms, 1999)

POINCARÉ CODE: A package of open-source implements for normalization and computer algebra reduction near equilibria of coupled ordinary differential equations. - Jilali Mikram; Fouad Zinoun; Abderrahim El Abdllaoui (Comput. Phys. Commun., 2013)