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.
Ian Parberry. A Real-Time Algorithm for the (n²-1)-Puzzle. Inf. Process. Lett., 56(1):23-28, 1995. [doi]