1. Amazon Inc.: Amazon import/export developer guide version 1.2. http://aws.amazon.com/documentation (2009). Accessed Aug 2009
2. Microsoft Azure Services Platform: http://www.microsoft.com/azure/default.mspx (2009). Accessed 2009
3. Kamara, S., Lauter, K.: Cryptographic cloud storage. In: Sion, R., et al. (eds.) Financial Cryptography and Data Security. LNCS6054, pp. 136–149. Springer, Berlin/Heidelberg (2009)
4. Popa, R.A., Lorch, J., Molnar, D., et al.: Enabling security in cloud storage SLAs with CloudProof. Microsoft TechReport MSR-TR-2010–46. http://research.microsoft.com/apps/pubs/default.aspx?id=131137 (2010). Accessed May 2010
5. Bagga, W., Molva, R.: Collusion-free policy-based encryption. In: Katsikas, S., et al. (eds.) Information Security, LNCS 4176, pp. 233–245. Springer, Berlin/Heidelberg (2006)