TY - BOOK AU - Marsden Jerold E AU - Misiolek Gerard AU - Ortega Juan-Pablo AU - Perlmutter Matthew AU - Ratiu Tudor S TI - Hamiltonian reduction by stages SN - 978-3-540-72469-8 U1 - 514.74 PY - 2007/// CY - Berlin PB - Springer-Verlag KW - Differential equations KW - Hamiltonian systems ER -