Publicado en: This is a transcript of the talk given by Dr. Feynman on December 29 and first published in Engineering and Science magazine, vol. XXIII, no. 5, February 1960, Pages 22-36.
Publicado en: American Federation of Information Processing Societies AFIPS '70 (Fall): Proceedings of the November 17-19, 1970, fall joint computer conference. November 1970. Pages: 281-285.