Text in periodical
Levy, Steven. – «The great liberator». – Wired. – Vol. 10, no. 10 (Oct. 2002). – P. 140-145, 154-156.
Text in periodical
Levy, Steven. – «The man who cracked the code to everything...». – Wired. – Vol. 10, no. 6 (June 2002). – Under «Features». – P. 132-137, 146-148.