Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{KYB_1972__8_5_a4, author = {Soukup, V\'aclav}, title = {On formulation of state equations for linear nonstationary discrete-time system}, journal = {Kybernetika}, pages = {--429}, publisher = {mathdoc}, volume = {08}, number = {5}, year = {1972}, mrnumber = {0332256}, zbl = {0251.93017}, language = {en}, url = {http://geodesic.mathdoc.fr/item/KYB_1972__8_5_a4/} }
Soukup, Václav. On formulation of state equations for linear nonstationary discrete-time system. Kybernetika, Tome 08 (1972) no. 5, p. 429. http://geodesic.mathdoc.fr/item/KYB_1972__8_5_a4/