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.
Jan Krajícek, Pavel Pudlák. Propositional Proof Systems, the Consistency of First Order Theories and the Complexity of Computations. Journal of Symbolic Logic, 54(3):1063-1079, 1989.