1. Faculty of Engineering, Universidad Piloto de Colombia, Carrera 9 No. 45A – 44, Bogotá D.C., Colombia.
2. Faculty of Environment and Natural Resources, Universidad Distrital Francisco José de Caldas, Carrera 5 Este 15-82, Bogotá D.C., Colombia.
3. Faculty of Technology, Universidade de Brasília. Campus Universitário Darcy Ribeiro, Brasília-DF, Brasil.