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.
Takeshi Sano, Eri Sato-Shimokawara, Toru Yamaguchi. Personal authentication based on buying history applying classification method. IJBM, 1(2):209-230, 2008. [doi]
Abstract is missing.