Authorization Recycling in RBAC Systems - Qiang Wei et al - Qiang Wei, Jason Crampton, Konstantin Beznosov, and Matei Ripeanu. Authorization recycling in RBAC systems. In SACMAT '08: Proceedings of the 13th ACM Symposium on Access Control Models and Technologies, Estes Park, Colorado, USA, June 11-13 2008, pp. 63-72. : - LERSSE-RefConfPaper-2008-026