@unpublished{ShakiFischer2015,
  author    = {Shaki, Samuel and Fischer, Martin H.},
  title     = {Newborn chicks need no number tricks. Commentary: Number-space mapping in the newborn chick resembles humans' mental number line},
  series = {Frontiers in human neuroscienc},
  volume    = {9},
  journal   = {Frontiers in human neuroscienc},
  publisher = {Frontiers Research Foundation},
  address   = {Lausanne},
  issn      = {1662-5161},
  doi       = {10.3389/fnhum.2015.00451},
  pages     = {3},
  year      = {2015},
  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@unpublished{KucianPlanggerO'Gormanetal.2013,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}
}
@unpublished{ShakiFischer2014,
  author    = {Shaki, Samuel and Fischer, Martin H.},
  title     = {Removing spatial responses reveals spatial concepts even in a culture with mixed reading habits},
  series = {Frontiers in human neuroscienc},
  volume    = {8},
  journal   = {Frontiers in human neuroscienc},
  publisher = {Frontiers Research Foundation},
  address   = {Lausanne},
  issn      = {1662-5161},
  doi       = {10.3389/fnhum.2014.00966},
  pages     = {2},
  year      = {2014},
  language  = {en}
}
@unpublished{FischerShaki2015,
  author    = {Fischer, Martin H. and Shaki, Samuel},
  title     = {Two steps to space for numbers},
  series = {Frontiers in psychology},
  volume    = {6},
  journal   = {Frontiers in psychology},
  publisher = {Frontiers Research Foundation},
  address   = {Lausanne},
  issn      = {1664-1078},
  doi       = {10.3389/fpsyg.2015.00612},
  pages     = {3},
  year      = {2015},
  language  = {en}
}