Affiliation: | 1. Department of Computing, Macquarie University, Sydney, NSW 2109, Australia;2. Department of Mathematical Sciences, Isfahan University of Technology, P.O. Box 85145, Isfahan, Iran;3. National Institute of Standards and Technology (NIST), 100 Bureau Drive, Gaithersburg, MD 20899, USA;4. College of Sciences, North China University of Technology, Beijing 100144, PR China |