Birkhoff normal form for splitting methods applied to semilinear Hamiltonian PDEs. Part I. Finite-dimensional discretization. - Erwan Faou; Benoît Grébert; Eric Paturel (Numerische Mathematik, 2010)

Birkhoff normal form for splitting methods applied to semilinear Hamiltonian PDEs. Part II. Abstract splitting. - Erwan Faou; Benoît Grébert; Eric Paturel (Numerische Mathematik, 2010)