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.
Ran Yang, Chuang Lin, Fujun Feng. A Time and Mutable Attribute-Based Access Control Model. JCP, 4(6):510-518, 2009. [doi]
Abstract is missing.