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.
Patrick C. Fischer, Albert R. Meyer, Arnold L. Rosenberg. Counter Machines and Counter Languages. Theory Comput. Syst., 2(3):265-283, 1968.