1. I. Bar-Kana, Adaptive Control — A Simplified Approach, in C. Leon-des (ed.) Control and Dynamic Systems, Vol. 25, pp. 187 – 226, 1987
2. I. Bar-Kana and H. Kaufmann, Global Stability and Performance of a Simplified Adaptive Algorithm, Int. J. Control, 42, pp. 1491 – 1505, 1985
3. M. Corless, First order adaptive controllers for systems which are stabilizable via high gain output feedback, in Analysis and Control of Nonlinear Systems (ed. by Byrnes, Martin, Salks ), pp. 13 – 16, North-Holland, 1988
4. U. Helmke and D. Prätzel-Wolters, Stability and robustness properties of universal adaptive controllers for first order linear systems, Int. J. Control, Vol. 48 (3), pp. 1153 – 1182, 1988
5. U. Helmke, D. Prätzel-Wolters and S. Schmid, Sufficient Conditions for Adaptive Stabilization and Tracking, Bericht der Arbeitsgruppe Technomathematik Nr. 38, Universität Kaiserslautern, 1989