1. Nonperiodic sampling and model matching
2. DE LA SEN , M. , and DORMIDO , S. , 1979 ,Proc. Seventeenth Annual Allerton Conf., Illinois, edited by J. B. Cruz, Jr. and F. F. Preparata ( Urbana-Champaign Department of Electrical Engineering and Coordinated Science Laboratory of the University of Illinois ), p. 206 ; 1981 a, Preprints of the eighth IF AC World Congress, Kyoto, Vol. VI, 71 ; 1981 b, Electron. Lett., 17, 922 .
3. A note on the transmission of relative errors in the observability problem
4. Discrete-time multivariable adaptive control