Notes, Comments and Preliminary results Apr 22 2010 Essahbi Essaadi and Mohamed Boutahar   A Measure of Variability in Comovement for Economic Variables: a Time-Varying Coherence Function Approach   Abstract  Contact Information  Citation  Full Text  -  Preliminary Result   Research announcements Nov 02 2011 FTITI ZIED and Sahbi Saadi   The relevance of the inflation targeting policy: a new analysis approach of the evolutionary spectral analysis   Working Paper Available   Abstract  Contact Information  Citation  Full Announcement  -  Research Announcement   Conference announcements