John Keith Magali, Villeurbanne, Auvergne-Rhône-Alpes, France, Thomas Bodin, LGLTPE, Univ. Lyon 1, ENS Lyon and CNRS, Lyon, France, Navid Hedjazian, University Claude Bernard Lyon 1, Villeurbanne, France, Henri Samuel, IRAP, Toulouse, France; CNRS, Paris Cedex 16, France and Suzanne Atkins, Utrecht University, Utrecht, 3584, Netherlands