@inbook{57414,
  author       = {{Kempen, Leander and Biehler, Rolf}},
  booktitle    = {{Proceedings of the 38th Conference of the International Group for the Psychology of Mathematics Education and the 36th Conference of the North American Chapter of the Psychology of Mathemat-ics Education (Vol. 3) }},
  editor       = {{Oesterle, S. and Liljedahl, P. and Nicol, C. and Allen, D.}},
  pages        = {{425--432}},
  publisher    = {{PME}},
  title        = {{{The Quality of Argumentations of First-Year Pre-Service Teachers}}},
  year         = {{2014}},
}