[2] Arstein Z.:
Stabilization with relaxed controls. Nonlinear Anal. Theory Method Appl. 11 (1983), 1163–1173
MR 0721403
[9] Iggidr A., Sallet G.:
Nonlinear stabilization by adding integrators. Kybernetika 30 (1994), 5, 499–506
MR 1314345 |
Zbl 0830.93065
[10] Koditschek D. E.: Adaptative techniques for mechanical systems. In: 5th Yale Workshop on Adaptative Systems, 1987, pp. 259-265
[12] Lasalle J. P., Lefschetz S.:
Stability by Lyapunov Method with Applications. Academic Press, New York 1961
MR 0132876