1. The NIST definition of cloud computing;Mell;Natl. Inst. Stand. Technol. Special Publication SP 800-145,2011
2. Cloud computing: state-of-the-art and research challenges;Zhang;J. Internet Serv. Appl.,2010
3. Citrix CloudPlatform 3.0.5 (Powered by Apache CloudStack) Administrator’s Guide;Jessica Tomechak,2012
4. I.D. Corporation, New IDC IT cloud services survey: top benefits and challenges, 2009, http://blogs.idc.com/ie/?p=730. (accessed 15.01.16).
5. C. Hoff, Cloud computing security: from DDoS (distributed denial of service) to EDoS (economic denial of sustainability), 2008, http://rationalsecurity.typepad.com/blog/2008/11/cloud-computing-security-from-ddos-distributed-denial-of-service-to-edos-economic-denial-of-sustaina.html (accessed 15.01.16).