Cascade unknown input observers applied to a quadruple tank process. - Feten Smida; Salim Hadj Saïd; Faouzi M'Sahli (SSD, 2015)

Robust High-Gain Observers Based Liquid Levels and Leakage Flow Rate Estimation. - Feten Smida; Salim Hadj Saïd; Faouzi M'sahli (J. Control. Sci. Eng., 2018)