E. ZERRIK, and F. GHAFRANI, (2013) Optimal control of wastewater biological treatment. Int. Journal of Engineering and innovative technology, Vol 3, Issue 1, p. 509, 2013.

E. ZERRIK, and Y. BENSLIMANE, and EL JAI, (2013) An output stabilization of bilinear distributed systems. Int. Journal of Math. Analysis, (IJMA) Vol. 7, N° 4, pp. 195-211. 2013.

E. ZERRIK, and S. BENHADID, and S. REKKAB, (2012) Sensors and Regional Gradient observability of hyperbolic Systems. Intilligence Control and Automation Vol 3, No 1, pp 78-89. 2012..

E. ZERRIK, and M.OULD SIDI, (2011) Regional controllability for in-finite dimentional bilinear systems: approach and simulations. Int.Jour. Cont. (2011) Vol. 84 N°12, pages 2108-2116.

E. ZERRIK, and Y. BENSLIMANE, and A. EL JAY, (2011) Regional gradient stabilisation forlinear distributed systems. Int.Review of Aut. Control. (2011) Vol 4 N°5, PP. 755-765..

E. ZERRIK, and M. OUZAHRA, (2011) An unbounded stabilization problem for distributed linear systems. Journal of Mathematical Sciences Volume 177, Number 3 (2011), 500-513..

E. ZERRIK, and M. OLULD SIDI, (2010) Regional Controllability of linear and semi linear Hyperbolic Systems. Int. Journal of Maths. Analysis,Vol.4, .no. 44,2167 – 2198, 2010.