IBM 603 (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "IBM 603" in Spanish language version.

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ibm.com

Richard R. Mertz (9 de noviembre de 1970). «Herb Grosch Interview» [Entrevista a Herb Grosch]. Computer Oral History Collection (en inglés). Smithsonian National Museum of American History Archives Center. Consultado el 24 de julio de 2017.

Patente USPTO n.º 2637763: «Pluggable Support for Electron Tube and Circuit» US patent 2637763, filed July 9, 1948 , issued May 5, 1953, Ralph L. Palmer