%0 Journal Article %A Grasselli, Osvaldo Maria %A Longhi, Sauro %A Tornambè, Antonio %T On the derivation of a state-space model of a periodic process described by recurrent equations %J Kybernetika %D 1993 %P 617-627 %V 29 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/KYB_1993__29_6_a7/ %G en %F KYB_1993__29_6_a7