%0 Journal Article %A Illner, Reinhard %A Lange, Horst %A Teismann, Holger %T Limitations on the control of Schrödinger equations %J ESAIM: Control, Optimisation and Calculus of Variations %D 2006 %P 615-635 %V 12 %N 4 %I EDP-Sciences %U http://archive.numdam.org/articles/10.1051/cocv:2006014/ %R 10.1051/cocv:2006014 %G en %F COCV_2006__12_4_615_0