Ben Youssef, Slim and Zaccour, Georges (2009): Absorptive Capacity, R&D Spillovers, Emissions Taxes and R&D Subsidies. Unpublished.
Ben Youssef, Slim (2010): Adoption of a clean technology using a renewable energy. Unpublished.
Ben Youssef, Slim (2008): Adoption of a Cleaner Technology by a Monopoly Under Incomplete Information. Unpublished.
Ben Youssef, Slim; Breton, Michèle and Zaccour, Georges (2011): Cooperating firms in inventive and absorptive research. Unpublished.
Ben Youssef, Slim and Dridi, Dhouha (2011): National advertising and cooperation in a manufacturer-two-retailers channel. Unpublished.
Ben Youssef, Slim and Dinar, Zeineb (2009): Régulation d'un duopole et R&D environnementale. Unpublished.
Ben Youssef, Slim and Dinar, Zeineb (2009): Régulation d'un duopole et R&D environnementale. Unpublished.
Ben Youssef, Slim and Dinar, Zeineb (2009): Regulation of a duopoly and environmental R&D. Unpublished.
Ben Youssef, Slim (2009): Transboundary Pollution and Absorptive Capacity. Unpublished.