Zhang, N., M. Ryan, and D. P. Guelev,
"Synthesising verified access control systems in XACML",
2004 ACM Workshop on Formal methods in security engineering: ACM Press, pp. 56-65, 2004.
Roshandel, R., B. Schmerl, N. Medvidović, D. Garlan, and D. Zhang,
"Understanding Tradeoffs among Different Architectural Modeling Approaches",
Fourth Working IEEE/IFIP Conference on Software Architecture (WICSA'04), Oslo, Norway, June, 2004.