TY - JOUR AU - Malanowski, Kazimierz AU - Tröltzsch, Fredi TI - Preface to the special issue on ''Theoretical and numerical aspects of optimal control'' JO - Control and Cybernetics PY - 2008 SP - 247 VL - 37 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CC_2008_37_2_a0/ LA - en ID - CC_2008_37_2_a0 ER -