Onoda, Ryoichi [The characteristics of altruistic behavior that can sustain generalized exchange in a society composed of two groups]. [electronic resource] - Shinrigaku kenkyu : The Japanese journal of psychology Aug 2016 - 240-50 p. digital Publication Type: Journal Article ISSN: 0021-5236 Standard No.: 10.4992/jjpsy.87.14080 doi Subjects--Topical Terms: AltruismHumans