Evaluation of the impulsive solution space of linear multivariable homogeneous implicit systems George F. Fragulis — 1994 Kybernetika
Minimal realizations of the inverse of a polynomial matrix using finite and infinite Jordan pairs George F. Fragulis — 1994 Kybernetika
Evaluation of the reachability subspace of general form polynomial matrix descriptions (PMDs) George F. Fragulis; Antonis I. G. Vardulakis — 1994 Kybernetika