Ben Rockwood's blog entry ​Using RBAC on (Open)Solaris

Sun's sites ​Databases that Support RBAC and ​RBAC Commands

An 18-page Sun ​BluePrint ​Role-Based Access Control and Secure Shell and a Sun White Paper ​RBAC in the Solaris Operating Environment

Three pages by Softpanorama (a 'slightly skeptical' Open Source Software Educational Society): ​Solaris 10 Role Based Access Control (RBAC), ​RBAC, SOX and Role Engineering in Large Organizations and ​Privileges and RBAC