Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
Jian Ping Sun, Wan-Tong Li. Multiple positive solutions of a discrete difference system. Applied Mathematics and Computation, 143(2-3):213-221, 2003. [doi]