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.
R. K.-Y. Li, R. J. Willis. Alternative resources in project scheduling. Computers & OR, 18(8):663-668, 1991. [doi]
Abstract is missing.