@article{CC_2008_37_2_a0,
     author = {Malanowski, Kazimierz and Tr\"oltzsch, Fredi},
     title = {Preface to the special issue on {''Theoretical} and numerical aspects of optimal control''},
     journal = {Control and Cybernetics},
     pages = {247},
     year = {2008},
     volume = {37},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CC_2008_37_2_a0/}
}