[1] |
Aizerman, M. A.; Gantmacher, F. R., Stability of Nonlinear Control Systems (1964), Holden-Day: Holden-Day Dan Francisco, Eng. Trans. · Zbl 0123.28401 |
[2] |
Halanay, A., Ordinary Differential Equations. Stability, Oscillations, Time Lags (1966), Academic Press: Academic Press New York · Zbl 0144.08701 |
[3] |
Hale, J. K., Asymptotic behavior of solutions of differential-difference equations, (Proceedings of the International Symposium for Non-linear Oscillations, Vol. II (1963)), Kiev · Zbl 0139.03501 |
[4] |
Hale, J. K., Functional differential equations with parameters, (Contributions to Differential Equations, I (1962), Wiley: Wiley N.Y), 401 · Zbl 0126.10503 |
[5] |
Hale, J. K., Functional Differential Equations (1971), Springer-Verlag: Springer-Verlag New York · Zbl 0213.36901 |
[6] |
Lefschetz, S., Stability of Non-linear Control Systems (1965), Academic Press: Academic Press New York · Zbl 0136.08801 |
[7] |
Yoshizawa, T., Stability by Liapunov Second Method (1966), The Mathematical Society of Japan: The Mathematical Society of Japan Tokyo · Zbl 0144.10802 |