A 105: 2261- 2262. 203. Dreber A, DG Rand, D Fudenberg, MA Nowak (2008). Winners don't punish. Nature 452: 348-351. 204. Fu F, C Hauert, MA Nowak, L Wang (2008). Reputation-based partner choice promotes cooperation in social networks. Phys Rev E 78: 026117. appears in Vir J Bio Phys Res 16(5). 205.