@incollection{MuellerGaus2018,
  author    = {Christoph E. M{\"u}ller and Hansj{\"o}rg Gaus},
  title     = {Quasi-experimental comparison group designs for social policy evaluation.},
  series = {Handbook of social policy evaluation},
  editor    = {Bent Greve},
  publisher = {Edward Elgar},
  address   = {Cheltenham},
  isbn      = {978-1-78536-323-8},
  pages     = {38 -- 56},
  year      = {2018},
  abstract  = {kein Abstract verf{\"u}gbar},
  language  = {en}
}