@article{KYB_1991_27_3_a7,
     author = {Bisiacco, Mauro and Fornasini, Ettore},
     title = {Structure and solutions of the {LQ} optimal control problem for {2D} systems},
     journal = {Kybernetika},
     pages = {231--242},
     year = {1991},
     volume = {27},
     number = {3},
     mrnumber = {1116837},
     zbl = {0754.49023},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1991_27_3_a7/}
}