@article{KYB_1991__27_4_a5,
     author = {\c{S}efik, Ayla and Sezer, Mesut Erol},
     title = {A structural analysis of the pole shifting problem},
     journal = {Kybernetika},
     pages = {333--344},
     publisher = {mathdoc},
     volume = {27},
     number = {4},
     year = {1991},
     mrnumber = {1127909},
     zbl = {0768.93029},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1991__27_4_a5/}
}