| Institution: | 1. Institute for Computational and Experimental Research in Mathematics, Providence, RI, 02903 USA;2. Department of Mathematics, Faculty of Basic Sciences, University of Maragheh, P.O. Box 55136-553, Maragheh, Iran;1. Carnegie Mellon University, Pittsburgh, USA;2. Departamento de Matemáticas y Estadística, Universidad del Norte, Barranquilla, Colombia;3. University of Birmingham, Birmingham, UK;4. CIRGET, UQÀM, Montréal, Qc, Canada;1. Department of Mathematics, Kansas State University, Mahattan, KS 66506, United States of America;2. Department of Mathematics, Landzhou University, Lanzhou, China |
