00382nam a2200133Ia 4500008004100000100001500041245004800056245003700104260004000141260000900181300002200190650001400212650002200226170224s9999    xx            000 0 und d  aRyan Yeung  aEndogenous peer effects: Fact or fiction?    cRyan Yeung & Phuong Nguyen-Hoang  bThe Journal of Educational Research  c2016  a109: Pages: 37-49  xEducation  xSpecial Education