Apr 09 2021 Christoph March and Marco Sahm   Parochial altruism and the absence of the group size paradox in inter-group conflicts   Abstract  Contact Information  Citation  Full Text  -  Preliminary Result   Apr 15 2018 Wei Hu and Nicolas Treich   Intergroup Conflict with Intragroup Altruism   Abstract  Contact Information  Citation  Full Text  -  Note