Brandt H, Ohtsuki H, Iwasa Y, Sigmund K (2007)
A survey on indirect reciprocity
In Mathematics for Ecology and Environmental Sciences, Y. Takeuchi, Y. Iwasa, K. Sato (eds)
Springer-Verlag, Berlin Heidelberg, Germany pp.21-51 (2007) More
Brandt H, Ohtsuki H, Iwasa Y, Sigmund K (2006)
A Survey on Indirect Reciprocity
IIASA Interim Report IR-06-065 (December 2006) More
