Simple nonlinear observers for on-line estimation of kinetic rates in bioreactors. - Mondher Farza; Krishna Busawon; Houbekeur Hammouri (Autom., 1998)

Constant-gain observer for a class of multi-output nonlinear systems. - Bassan Targui; Mondher Farza; Houbekeur Hammouri (Appl. Math. Lett., 2002)

Design of a continuous-discrete observer for state affine systems. - Madiha Nadri; Houbekeur Hammouri (Appl. Math. Lett., 2003)