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.
G. N. Georgacarakos. A modal system properly independent of both the Brouwerian system and S4. Notre Dame Journal of Formal Logic, 19(1):101-114, 1978. [doi]