State observation for fedbatch control of phenol degradation by Ralstonia eutropha. - Isabelle Queinnec; D. Léonard; C. Ben-Youssef (ECC, 1999)

Nutritional limitation modelling for continuous control of lactic acid production by Lactobacillus casei. - C. Ben-Youssef; A. Olmos-Dichara (ECC, 2001)