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.
H. Freeman, L. Garder. Apictorial Jigsaw Puzzles: The Computer Solution of a Problem in Pattern Recognition. IEEE Transactions on Computers, 13(2):118-127, 1964. [doi]
Abstract is missing.