Marc Gaudry is an Emeritus Professor of Economics at the University of Montreal, Canada. He has previously also held professorships at the Université Louis Pasteur (Strasbourg) and the Universität Karlsruhe (Germany). He is the author of DRAG, the pioneering econometric accident model for Quebec, and of the TRIO software for estimating aggregate or disaggregate econometric models with multiple, estimably non-linear functional relationships (Box-Cox transformations).