1. Benantar, M.: Access Control Systems: Security, Identity, Management and Trust Models. Springer US (2009)
2. Mell, P., Grance, T.: The NIST Definition of Cloud Computing. Special Publication 800-145 (2011),
http://csrc.nist.gov/publications/nistpubs/800-145/SP800-145.pdf
3. DORMA: Brivo to Introduce SaaS-Based Access Control Solution at ISC West (2012),
http://www.securitysales.com/article/dorma-brivo-to-introduce-saas-based-access-control-solution-at-isc-west
4. LNBIP;M.D. Aime,2011
5. Chou, Y., Levina, O., Oetting, J.: Enforcing Confidentiality in a SaaS Cloud Environment. In: 19th Telecommunications forum TELFOR, Serbia, Belgrade, November 22-24. IEEE Press (2011)