1. FORAC, CIRRELT, Département de génie mécanique Université Laval Quebec City Quebec G1W 1J4 Canada
2. Institute of Forestry and Conservation John H. Daniels Faculty of Architecture, Landscape and Design, University of Toronto Toronto Ontario M5S 3B3 Canada
3. Department of Industrial Engineering University of Chile and Institute for Complex Engineering Systems (ISCI) República 701 Santiago Chile