Najiba Benabess, “Privatization in Closed and Open Mixed Oligopolies,” Proceedings of the 11th International Business Information Management Association (IBIMA), ISBN : 978-0-9821489-0-7, 4- 6 January 2009,  Cairo, Egypt, p. 1865-1876.

Najiba Benabess,” Partial Privatization and Incentive Contracts,” Proceedings of the 9th International Business Information Management Association (IBIMA), ISBN: 978-0-9753393-8-1, 4- 6 January 2008, Marrakech, Morocco, p. 76-83.