A. BOUTOULOUT, and H. BOURRAY, and FATIMA-ZAHRAE EL ALAOUI, (2013) Boundary gradient observability for semilinear parabolic systems: Sectorial approach. Mathematical Sciences Letters, International Journal, 2, No. 1,pp 45-53., 2013.

A. BOUTOULOUT, and H. BOURRAY, and A. KHAZARI, (2013) Gradient Observability and sensors for hyperbolic systems. Inernational journal of computers and technology, V 10, N2, pp 1357-1375, 2013.

A. BOUTOULOUT, and H. BOURRAY, and A. KHAZARI, (2013) Gradient observability for hyperbolic system. Int. Review of Automatic Control REACO, Vol 6, N 3, pp: 247-263, 2013.

H. BOURRAY, and ALI BOUTOULOUT, and F.Z EL ALAOUI, (2012) Boundary flux reconstruction for semilinear parabolic systems: HUM Approach. Int. Review of Automatic Control REACO, Vol 5 No 5 pp: 652-659, 2012.

BOUTOULOUT, and H. BOURRAY, and F.Z EL ALAOUI, (2012) Regional gradient observability for distributed semilinear parabolic systems. Journal of Dynamical and control Systems. Vol. 18, No. 2, pp. 159-179, (2012)..

M. BADDI, and H. BOURRAY, and ALI BOUTOULOUT, (2011) Constrained observability for parabolic systems. Int. J. of Math. Analysis 2011 n°35 pp1695-1710.

H. BOURRAY, and A. BOUTOULOUT, and M. BADDI, and FATIMA-ZAHRAE EL ALAOUI, (2011) Regional boundary observability with constraints. Int. Review of automatic control V4 N°6 (2011), PP. 846-854..

K. ZTOT, and EL H. ZERRIK, and H. BOURRAY, (2011) Regional control problem for distributed bilinear systems: approach and simulations. International Journal of Appl. Mathematics Comput. Siences (2011), Vol. 21, N°. 3, PP. 499-508.

A. BOUTOULOUT, and H. BOURRAY, and M. BADDI, (2011) Regional observability with constraints of the gradient. Int. Journal of Pure and Applied Mathematics (2011) Volume 73, N°2, 235-253.

A. BOUTOULOUT, and H. BOURRAY, and FATIMA-ZAHRAE EL ALAOUI, (2010) Regional Boundary Observability of Semi –Linear Systems Approach and simulation. Int.Journal of Maths.Analysis,Vol ; 4, N°.24, 1153 – 1173, 2010.