Author: Bahaa, G. M.
- 
El-Saify, Hussain A.; Bahaa, G. M.:
		Optimal control for $n\times n$ coupled systems governed by Petrowsky type equations with control-constrained and infinite number of variables.
		
			(English).
Mathematica Slovaca,
		vol. 53
			(2003),
			issue 3,
		pp. 291-311
 
- 
El-Saify, Hussain A.; Bahaa, G. M.:
		Optimal control for $n\times n$ hyperbolic systems involving operators of infinite order.
		
			(English).
Mathematica Slovaca,
		vol. 52
			(2002),
			issue 4,
		pp. 409-424
 
 
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