@article{KYB_1993__29_5_a10,
     author = {Bonilla, Mois\'es E. and Malabre, Michel},
     title = {External reachability (reachability with pole assignment by p. d. feedback) for implicit descriptions},
     journal = {Kybernetika},
     pages = {499--510},
     publisher = {mathdoc},
     volume = {29},
     number = {5},
     year = {1993},
     mrnumber = {1264882},
     zbl = {0802.93025},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1993__29_5_a10/}
}