@article{LonnemannLinkersdoerferNagleretal.2013,
  author    = {Jan Lonnemann and Janosch Linkersd{\"o}rfer and Telse Nagler and Marcus Hasselhorn and Sven Lindberg},
  title     = {Spatial representations of numbers and letters in children},
  journal   = {Frontiers in psychology},
  volume    = {4},
  number    = {544},
  doi       = {10.3389/fpsyg.2013.00544},
  year      = {2013},
}