TY - JOUR AU - Changxing Miao AU - Youbin Zhu TI - Invariants, conservation laws and time decay for a nonlinear system of Klein–Gordon equations with Hamiltonian structure JO - Applicationes Mathematicae PY - 2006 SP - 323 EP - 344 VL - 33 IS - 3-4 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/am33-3-7/ DO - 10.4064/am33-3-7 LA - en ID - 10_4064_am33_3_7 ER -