Desmedt, Yvo and Burmester, Mike and Seberry, Jennifer. Equitability in Retroactive Data Confiscation versus Proactive Key Escrow. Florida State University Department of Computer Science 206 Love Building FL 32306-4530 Tallahassee USA. Lecture Notes in Computer Science: Public Key Cryptography, pp.277-286. 2001. (Postscript) 3 Mart 2016 tarihinde Wayback Machine sitesinde arşivlendi., (Postscript 2) 30 Ağustos 2017 tarihinde Wayback Machine sitesinde arşivlendi.
Commonwealth v. Gelfgatt. 468. Supreme Judicial Court of Massachusetts. 25 Haziran 2014. s. 512. 1 Şubat 2016 tarihinde kaynağından arşivlendi. Erişim tarihi: 19 Ekim 2014.
Desmedt, Yvo and Burmester, Mike and Seberry, Jennifer. Equitability in Retroactive Data Confiscation versus Proactive Key Escrow. Florida State University Department of Computer Science 206 Love Building FL 32306-4530 Tallahassee USA. Lecture Notes in Computer Science: Public Key Cryptography, pp.277-286. 2001. (Postscript) 3 Mart 2016 tarihinde Wayback Machine sitesinde arşivlendi., (Postscript 2) 30 Ağustos 2017 tarihinde Wayback Machine sitesinde arşivlendi.
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Desmedt, Yvo and Burmester, Mike and Seberry, Jennifer. Equitability in Retroactive Data Confiscation versus Proactive Key Escrow. Florida State University Department of Computer Science 206 Love Building FL 32306-4530 Tallahassee USA. Lecture Notes in Computer Science: Public Key Cryptography, pp.277-286. 2001. (Postscript) 3 Mart 2016 tarihinde Wayback Machine sitesinde arşivlendi., (Postscript 2) 30 Ağustos 2017 tarihinde Wayback Machine sitesinde arşivlendi.
Commonwealth v. Gelfgatt. 468. Supreme Judicial Court of Massachusetts. 25 Haziran 2014. s. 512. 1 Şubat 2016 tarihinde kaynağından arşivlendi. Erişim tarihi: 19 Ekim 2014.