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.
Siegfried Schaible, Israel Zang. 2-functions. Math. Program., 19(1):289-299, 1980. [doi]
Abstract is missing.