@article{CC_2009_38_3_a0,
     author = {Hinze, Michael and Matthes, Ulrich},
     title = {A note on variational discretization of elliptic {Neumann} boundary control},
     journal = {Control and Cybernetics},
     pages = {577--591},
     publisher = {mathdoc},
     volume = {38},
     number = {3},
     year = {2009},
     zbl = {1301.49074},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CC_2009_38_3_a0/}
}