| Institution: | 1. Department of Mathematics, Tamkang University, Tamsui, Taipei Shien, Taiwan, Republic of China;2. Department of Discrete and Statistical Sciences, Auburn University, 120 Math Annex. Auburn. AL 36849-5307, USA;3. Department of Applied Mathematics, National Chiao Tung University, Hsin Chu, Taiwan, Republic of China;1. Department of Mathematics, University of Denver, 2280 S. Vine St., Denver, CO 80208, USA;2. University of Calgary, Department of Mathematics and Statistics, Calgary, Alberta, Canada T2N 1N4;1. Departamento de Matemática Aplicada II, Universidad de Sevilla, Spain;2. Departamento de Matemáticas, Cinvestav, Mexico;3. Departamento de Matemática y Ciencia de la Computación, Universidad de Santiago, Santiago, Chile |
