@phdthesis{Hamvanden2016,
  author      = {Ann-Katrin Ham van den},
  title       = {Ein Validit{\"a}tsargument f{\"u}r den Mathematiktest der National Educational Panel Study f{\"u}r die neunte Klassenstufe},
  type        = {doctoralthesis},
  pages       = {229},
  school      = {Leuphana Universit{\"a}t L{\"u}neburg, Universit{\"a}tsbibliothek der Leuphana Universit{\"a}t L{\"u}neburg},
  year        = {2016},
}