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.
Wit Forys, Tom Head. The poset of retracts of a free monoid. Int. J. Comput. Math., 37(1-2):45-48, 1990. [doi]
Abstract is missing.