Two observer approaches for synchronization of chaotic Colpitts oscillators: application to secure data transmission. - Maryam L'Hernault; Jesús de León-Morales; Jean-Pierre Barbot; Achour Ouslimani (CDC, 2006)

Feasibility of Analog Realization of a Sliding-Mode Observer: Application to Data Transmission. - Maryam L'Hernault; Jean-Pierre Barbot; Achour Ouslimani (IEEE Trans. Circuits Syst. I Regul. Pap., 2008)