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.
Vladimir V. Rybakov. Construction of an Explicit Basis for Rules Admissible in Modal System S4. Math. Log. Q., 47(4):441-446, 2001. [doi]
Abstract is missing.