Hussein Fneich (University of Montpellier, ICGM, CNRS UMR 5253, 34095 Montpellier Cedex 5, France), Nathalie Gaumer (University of Angers, LPhiA, UPRES EA 4464, 49045 Angers Cedex 01, France), Stephane Chaussedent (University of Angers, LPhiA, UPRES EA 4464, 49045 Angers Cedex 01, France), Manuel Vermillac (University of Côte d'Azur, InPhyNi, CNRS UMR 7010, 06108 Nice Cedex 2, France), Wilfried Blanc (University of Côte d'Azur, InPhyNi, CNRS UMR 7010, 06108 Nice Cedex 2, France), Ahmad Mehdi (University of Montpellier, ICGM, CNRS UMR 5253, 34095 Montpellier Cedex 5, France)