1. Graduate program; College of Physical Sciences and Mathematics; University of Chile; Chile
2. Operations Research Department; Naval Postgraduate School; Monterey; CA; USA
3. Department of Civil Engineering; College of Physical Sciences and Mathematics; University of Chile; Chile
4. Department of Electrical Engineering; Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Santiago; Chile
5. Department of Industrial Engineering; College of Physical Sciences and Mathematics; University of Chile; Chile