"Value and Financial Profile of Moroccan Industrial Enterprises", Communication at the International Symposium "Third Spring University of Mediterranean Economics", Al Akhawayn University -27-28 May 2004, Ifrane. (Article presented in collaboration with M. BERRICHI and H. DRISSI).
"Taxation and private investment in Morocco: analysis of the effects of distortion", Communication to the study day "Taxation and Competitiveness of Enterprises"; at the Faculty of Juridical, Economic and Social Sciences -Sidi Mohamed Ben Abdellah University - Fez, December 21, 2005.