\chapterauthor{Xavier Meyer and Bastien Chopard}{Department of Computer Science, University of Geneva, Switzerland}
-\chapterauthor{Paul Albuquerque}{Institute for Informatics and Telecommunications, hepia, \\ University of Applied Sciences of Western Switzerland -- Geneva, Switzerland}
+\chapterauthor{Paul Albuquerque}{Institute for Informatics and Telecommunications, HEPIA, \\ University of Applied Sciences of Western Switzerland -- Geneva, Switzerland}
%\chapterauthor{Bastien Chopard}{Department of Computer Science, University of Geneva}
%\chapter{Linear programming on a GPU: a study case based on the simplex method and the branch-cut-and bound algorithm}