1. OGF OCCI–Open Cloud Computing Interface, 2011. http://www.occi-wg.org, visited June 2011.
2. DMTF cloud management standards, 2011. http://www.dmtf.org/standards/cloud, visited June 2011.
3. Cloudstandards, 2011. http://www.cloud-standards.org/, visited June 2011.
4. Virtual infrastructure management in private and hybrid clouds;Sotomayor;IEEE Internet Computing,2009
5. Design Patterns. Elements of Reusable Object-Oriented Software;Gamma,1995