Lunwei Wang Lifeng Wei Xiangke Liao Huaimin Wang AT-RBAC: An Authentication Trustworthiness-Based RBAC Model. 343-350 http://dx.doi.org/10.1007/978-3-540-30207-0_43 2004 conf/gcc/2004-w GCC Workshops db/conf/gcc/gcc2004-w.html#WangWLW04