[2] Acocella, Joan, "The Typing Life: How writers used to write", The New Yorker, April 9, 2007, a review of The Iron Whim: A Fragmented History of Typewriting (Cornell) 2007, by Darren Wershler-Henry
Liebowitz, S. J.; Stephen E. Margolis (1990). “The Fable of the Keys”. Journal of Law & Economics (The University of Chicago) XXXIII (April 1990). http://wwwpub.utdallas.edu/~liebowit/keys1.html2008年6月18日閲覧. "This article examines the history, economics, and ergonomics of the typewriter keyboard. We show that David's version of the history of the market's rejection of Dvorak does not report the true history, and we present evidence that the continued use of Qwerty is efficient given the current understanding of keyboard design."
