@misc{Hopf2009,
  author    = {Diether Hopf},
  title     = {Setting out : preschool and primary school},
  institution = {Department Erziehungswissenschaft},
  series    = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe},
  number    = {paper 090},
  type      = {postprint},
  year        = {2009},
}