1. Department of Civil and Industrial Engineering, Pontificia Universidad Javeriana Seccional Cali, Cali, Colombia.
2. School of Industrial Engineering, Universidad del Valle, Guadalajara de Buga, Colombia.
3. GERAD and Département de Mathématiques et Génie industriel, École Polytechnique of Montreal, Montreal, Canada.
4. Department of Electronics and Computer Science, Pontificia Universidad Javeriana Seccional Cali, Cali, Colombia.