Raafat Talhouk

Raafat Talhouk
Professor at the 

École Supérirer d'Ingénieur Léonard de Vinci-ESILV, Paris-La Défense. 

and

Lebanese University,
Faculty of Science I,
department of mathematics,
Hadat-Lebanon.

Email: raafat.talhouk AT devinci.fr ; rtalhouk AT ul.edu.lb or  talhoukr AT gmail.com