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.
Hilary Putnam. Trial and Error Predicates and the Solution to a Problem of Mostowski. Journal of Symbolic Logic, 30(1):49-57, 1965.