Polynomial operations: Numerical performance in matrix diophantine equation. - Ferdinand Kraffer; Sona Pejchová; Michael Sebek (Kybernetika, 1994)

Spectral factorization via Lyapunov equation based Newton-Raphson iteration. - Ferdinand Kraffer; Jean Jacques Loiseau (ACC, 2002)

Parametrization and reliable extraction of proper compensators. - Ferdinand Kraffer; Petr Zagalák (Kybernetika, 2002)