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.
Tero Harju, Oscar H. Ibarra, Juhani Karhumäki, Arto Salomaa. Some Decision Problems Concerning Semilinearity and Commutation. J. Comput. Syst. Sci., 65(2):278-294, 2002. [doi]