PIERRE L. DOUILLET is an assistant professor in the Department of Mathematics at Ecole Nationale Supérieure des Arts et Industries Textiles (ENSAIT). His research interests include modeling, operations research, formal computing, network performances evaluation and computers' security. His Web address is <http://www.douillet.info>.
BESOA RABENASOLO is a professor in the Department of Supply Chain Management at Ecole Nationale Supérieure des Arts et Industries Textiles (ENSAIT). His research interests include sales forecasting, economic evaluation of products design, operations research and supply chain management. He is a member of INFORMS and Textile Institute Societies. His e-mail address is <besoa.rabenasolo@ensait.fr>.
