@article{DumontNeumannMaazetal.2013,
  author    = {Hanna Dumont and Marko Neumann and Kai Maaz and Ulrich Trautwein},
  title     = {The effect of student body composition on academic achievement International and National Evidence},
  journal   = {Psychologie in Erziehung und Unterricht : Zeitschrift f{\"u}r Forschung und Praxis},
  volume    = {60},
  number    = {3},
  pages     = {163 -- 183},
  doi       = {10.2378/peu2013.art14d},
  year      = {2013},
}