@article{CC_2010_39_3_a5,
     author = {Sachs, Ekkehard W. and Schu, Matthias},
     title = {Reduced order models in {PIDE} constrained optimization},
     journal = {Control and Cybernetics},
     pages = {661--675},
     year = {2010},
     volume = {39},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CC_2010_39_3_a5/}
}