«Baby Boomers Retire,» Pew Research Center, December 29, 2010 .
78
David C. Brock, «How William Shockley's Robot Dream Helped Launch Silicon Valley,» IEEE Spectrum, November 29, 2013, .
79
David C. Brock, «From Automation to Silicon Valley: The Automation Movement of the 1950s, Arnold Beckman, and William Shockley,» History and Technology 28, no. 4 (2012), .
