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.
Ebadollah S. Mahmoodian, Nasrin Soltankhah. On the existence of (v, k, t) trades. Australasian J. Combinatorics, 6:279-292, 1992. [doi]