Patrick Marchesiello, IRD Institute of Research for Development, LEGOS, Toulouse, France, Marcela Contreras, IGE, Grenoble Alpes University, Grenoble, France, Lionel Renault, LEGOS, University of Toulouse, IRD, CNRS, CNES, UPS, Toulouse, France, Laurent Debreu, Univ. Grenoble Alpes, Inria, CNRS, Grenoble INP, LJK, Grenoble, France and Nicholas Kevlahan, McMaster University, Department of Mathematics and Statistic, Hamilton, Canada