Institution: | 1. Mathematics and Statistics, Carleton University, Ottawa, Ontario, Canada, K1S 5B6;2. Computing, Informatics, and Decision Systems Engineering, Arizona State University, P.O. Box 878809, Tempe, AZ 85287, USA;3. Mathematics and Statistics, Ryerson University, Toronto, Ontario, Canada, M5B 2K3;4. CINVESTAV-Tamaulipas, Information Technology Laboratory, Km. 6 Carretera Victoria-Monterrey, 87276 Victoria Tamps., Mexico |