@article{KYB_1991__27_3_a6,
     author = {Rocha, Paula and Willems, Jan C.},
     title = {On the representation of {2-D} systems},
     journal = {Kybernetika},
     pages = {225--230},
     publisher = {mathdoc},
     volume = {27},
     number = {3},
     year = {1991},
     mrnumber = {1116836},
     zbl = {0746.93016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1991__27_3_a6/}
}