1. University of Grenoble Alpes, LEPMI, F-38000 Grenoble, France
2. CNRS, LEPMI, F-38000 Grenoble, France
3. University of Grenoble Alpes, SIMAP, F-38000 Grenoble, France
4. CNRS, SIMAP, F-38000 Grenoble, France
5. Axane, 2 rue de Clémencière,
BP 15, 38360 Sassenage, France
6. Member of the French University
Institute, IUF, Paris, France