1. A break in the clouds: towards a cloud definition;Vaquero,2008
2. Next generation of computing through cloud computing technology;Mollah,2012
3. Achieving secure, scalable and fine-grained data access control in cloud computing;Yu,2010
4. Cloud computing security issues and challenges;Popovic,2010
5. Emerging Security Challenges in Cloud Computing. Information and Communication Technologies;Bhel,2011