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.
Siu Lun Ma. A Family of Difference Sets Having -1 as an Invariant. Eur. J. Comb., 10(3):273-274, 1989. [doi]
Abstract is missing.