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.
Thomas Ang, Janusz A. Brzozowski. Languages Convex with Respect to Binary Relations, and Their Closure Properties. Acta Cybern., 19(2):445-464, 2009. [doi]