Cooperation in Prisoner's Dilemma Game: Influence of Social Relations. - Maurice Grinberg; Evgenia Hristova; Milena Borisova (CogSci, 2012)

Cooperation in Prisoner's Dilemma Game: Influence of Players' Social Roles. - Evgenia Hristova; Maurice Grinberg; Iskra Georgieva; Milena Borisova (CogSci, 2013)