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.
Seinosuke Toda. Simple Characterizations of P(#P) and Complete Problems. J. Comput. Syst. Sci., 49(1):1-17, 1994.