@article{M2AN_2012__46_4_911_0,
     author = {Clason, Christian and Ito, Kazufumi and Kunisch, Karl},
     title = {A minimum effort optimal control problem for elliptic {PDEs}},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {911--927},
     publisher = {EDP-Sciences},
     volume = {46},
     number = {4},
     year = {2012},
     doi = {10.1051/m2an/2011074},
     mrnumber = {2891474},
     zbl = {1270.49023},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/m2an/2011074/}
}