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.
Arto Salomaa. Power Sums Associated with Certain Recursive Procedures on Words. Int. J. Found. Comput. Sci., 22(1):261-272, 2011. [doi]