Date: 2009
Contributors:

Brain Boosters. (Sandberg, A. & Bostrom, N. 2009. In P. Healey (Ed.) Unnatural Selection: The Challenges of Engineering Tomorrow’s People)

https://www.amazon.co.uk/d/cka/Unnatural-Selection-Challenges-Engineering-Tomorrows-Earthscan-Science/1844076229