Internet, http://www.lucent.com/minds/discoveries/tline50b.html#pioneers, 2006-11-07
Internet, http://www.lucent.com/minds/transistor/pdf/timeline.pdf, 2006-11-07
Internet, http://www.mpoweruk.com/history.htm, 2006-11-07
Information trouvée : american engineer
Zone melting / by William G. Pfann.- J. Wiley, 1958