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.
T. S. E. Maibaum. A Generalized Approach to Formal Languages. J. Comput. Syst. Sci., 8(3):409-439, 1974.