1. Boyom C. Callens S. Cherfi S. Post-materialist values and the adoption of environmental innovation: the case of electric vehicle 8th International Management Conference Bucharest 2014
2. Cultures of sustainability according to Ulrich Beck scheme: territorial strategies for electromobility;Boyom;Journal of Innovation Economics & Management,2016
3. Les modèles comportementaux de l'attractivité;Callens;Préludes. Les cahiers de l'Association Tiers Monde,2010
4. L'émergence attendue du véhicule électrique;Callens;Préludes. Les cahiers de l'Association Tiers Monde,2013
5. Callens S. Cherfi S. The intensive exchanges flows. About a new regionalism: OBOR (One Belt, One Road) 9th International Management Conference Bucarest 2015