Heide Glüsing-Lüerssen
- The Degeneration of Reachable Singular Systems under Feedback-Transformations. KYBERNETIKA 30 (1994) n.4, 387-391.
- The Algebraic Structure of Delay-Differential Systems: A Behavioral Perspective. KYBERNETIKA 37 (2001) n.4, 397-426.