@article{COCV_2006__12_4_615_0,
     author = {Illner, Reinhard and Lange, Horst and Teismann, Holger},
     title = {Limitations on the control of {Schr\"odinger} equations},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     pages = {615--635},
     publisher = {EDP-Sciences},
     volume = {12},
     number = {4},
     year = {2006},
     doi = {10.1051/cocv:2006014},
     mrnumber = {2266811},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1051/cocv:2006014/}
}