@article{KYB_1991__27_5_a6,
     author = {Geerts, Ton},
     title = {A priori results in linear-quadratic optimal control theory},
     journal = {Kybernetika},
     pages = {446--457},
     publisher = {mathdoc},
     volume = {27},
     number = {5},
     year = {1991},
     mrnumber = {1132607},
     zbl = {0767.49027},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1991__27_5_a6/}
}