"From the reviews: ""This book on access control systems centers on security, identity management, and trust models. … The book includes adequate references and a handy index. … The coverage of topics in the book is satisfactory. The book will be useful for those who wish to go deep into mechanisms for access control. It may be used for advanced courses in information security. Practitioners and university students are likely to benefit from reading it. I recommend this book as a useful reference for access control."" (S. V. Nagaraj, Computing Reviews, December, 2006)"