Publicado en: Proceedings of the first All-Union Conference on the technological reconstruction of the communications sector and the development of low-current engineering. Moscow, January 1933.
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.
Publicado en: Deep Space Network Progress Report, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA - DSN PR 42-44, January and February 1978, pp. 114-116.