1. M. Z. Djordjevic, Large Scale Syst. 5, 255–262 (1983).
2. A. A. Martynyuk, Dokl. Akad. Nauk SSSR 249, 59–63 (1985).
3. W. Hahn, Stability of Motion (Springer-Verlag, Berlin, 1967).
4. A. A. Martynyuk, Stability by Liapunov’s Matrix Function Method with Applications (Marcel Dekker, New York, 1998).
5. A. A. Martynyuk, Qualitative Methods in Nonlinear Dynamics: Novel Approaches to Liapunov’s Matrix Functions (Marcel Dekker, New York, 2002).