TY - JOUR AU - Weiss, George AU - Tucsnak, Marius TI - How to get a conservative well-posed linear system out of thin air. Part I. Well-posedness and energy balance JO - ESAIM: Control, Optimisation and Calculus of Variations PY - 2003 SP - 247 EP - 273 VL - 9 PB - EDP-Sciences UR - http://archive.numdam.org/articles/10.1051/cocv:2003012/ DO - 10.1051/cocv:2003012 LA - en ID - COCV_2003__9__247_0 ER -