Notes, Comments and Preliminary results Apr 12 2004 François-Charles Wolff , Mohamed Jellal and Khaled Bouabdallah   Unemployment and work sharing in an efficiency wage model   Abstract  Contact Information  Citation  Full Text  -  Note   Dec 15 2003 François-Charles Wolff and Mohamed Jellal   International migration and human capital formation   Abstract  Contact Information  Citation  Full Text  -  Note