@article{SixtusLonnemannFischeretal.2019,
  author    = {Elena Sixtus and Jan Lonnemann and Martin H. Fischer and Karsten Werner},
  title     = {Mental Number Representations in 2D Space},
  journal   = {Frontiers in Psychology},
  volume    = {10},
  doi       = {10.3389/fpsyg.2019.00172},
  year      = {2019},
}