1. A. El Jai, A.J. Pritchard, Sensors and controls in the analysis of distributed systems: Ellis Horwood Series in Mathematics and its Applications, Wiley, New York, 1988.
2. On exponential stabilizability with arbitrary decay rate for linear systems in Hilbert spaces;Xavier;SAMS,2000
3. R.F. Curtain, H.J. Zwart, Introduction to Infinite Dimensional Linear Theory Systems, Springer, New York, 1995.
4. R. Al-Saphory, A. El Jai, Asymptotic regional reconstruction, Int. J. Syst. Sci., submitted for publication.
5. Sensors structures and regional detectability of parabolic distributed systems;Al-Saphory;Int. J. Sens. Actuators,2001