@unpublished{FischerKnops2014,
  author    = {Fischer, Martin H. and Knops, Andre},
  title     = {Attentional cueing in numerical cognition},
  series = {Frontiers in psychology},
  volume    = {5},
  journal   = {Frontiers in psychology},
  publisher = {Frontiers Research Foundation},
  address   = {Lausanne},
  issn      = {1664-1078},
  doi       = {10.3389/fpsyg.2014.01381},
  pages     = {3},
  year      = {2014},
  language  = {en}
}
@unpublished{KucianPlanggerO'Gormanetal.2013,
  author    = {Kucian, Karin and Plangger, Fabienne and O'Gorman, Ruth and von Aster, Michael G.},
  title     = {Operational momentum effect in children with and without developmental dyscalculia},
  series = {Frontiers in psychology},
  volume    = {4},
  journal   = {Frontiers in psychology},
  number    = {45},
  publisher = {Frontiers Research Foundation},
  address   = {Lausanne},
  issn      = {1664-1078},
  doi       = {10.3389/fpsyg.2013.00847},
  pages     = {3},
  year      = {2013},
  language  = {en}
}