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.
Wolfgang Espelage, Egon Wanke. The combinatorial complexity of masterkeying. Math. Meth. of OR, 52(2):325-348, 2000. [doi]
Abstract is missing.