TY - JOUR AU - E. Casas AU - Mariano Mateos AU - Fredi Tröltzsch TI - Necessary and Sufficient Optimality Conditions for Optimization Problems in Function Spaces and Applications to Control Theory JO - ESAIM. Proceedings PY - 2003 SP - 18 EP - 30 VL - 13 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1051/proc:2003001/ DO - 10.1051/proc:2003001 LA - en ID - EP_2003_13_a2 ER -