1. Overview of projects working on next-generation secure email. https://github.com/OpenTechFund/secure-email. Accessed Feb 2015. Overview of projects working on next-generation secure email. https://github.com/OpenTechFund/secure-email. Accessed Feb 2015.
2. Apple Inc. iOS security. https://www.apple.com/business/docs/iOS Security Guide.pdf June 2015. Apple Inc. iOS security. https://www.apple.com/business/docs/iOS Security Guide.pdf June 2015.
3. Threshold Schemes with Disenrollment
4. Safeguarding cryptographic keys