1. Ambrosino, G., Celentano, G. and Garofalo, F. (1985) Robust Model Tracking Control for a Class of Nonlinear Plants. IEEE Trans. Automatic Control, AC
-30, 275.
2. Barmish, B.R., Corless, M., Leitmann, G. (1983) A new class of stabilizing controllers for uncertain dynamical systems. SIAM J. on Control and Optimization, 21, No. 2, 246.
3. Barmish, B.R., Galimidi, A.R. (1986) Robustness of Luenberger Observers: Linear System Stabilized via Nonlinear Control. Automatica
22, 246.
4. Barmish, B.R., Leitmann, G. (1982) On Ultimate Boundedness Control of Uncertain Systems in Absence of Matching Conditions. IEEE Trans. Automatic Control, AC-27, 1253.
5. Bartolini G., Zolezzi, T. (1985) Variable Structure Systems Nonlinear in the Control Law. IEEE Trans. Automatic Control, AC-30, 681.