Rand, David G., and Martin A. Nowak. New Scientist, 2009.
Dreber, Anna, David G. Rand, Drew Fudenberg and Martin A. Nowak. Nature Vol. 452, (2008): 348-351. Data and Code. Download Paper. Supplementary Information.
Rand, David G., Qinlian Zhou, Gregery T. Buzzard, and Jeffrey J. Fox. IEEE Transactions on Bio-Medical Engineering Vol. 55, No. 1 (2008): 3-13.