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.
Pavol Duris, Juraj Hromkovic. One-Way Simple Multihead Finite Automata are not Closed Under Concatenation. Theoretical Computer Science, 27:121-125, 1983.