@article{ElsnerSchellhas2012,
  author    = {Birgit Elsner and Bernd Schellhas},
  title     = {The acquisition of flexible tool use in preschoolers the impact of prior experience},
  journal   = {Zeitschrift f{\"u}r Psychologie = Journal of psychology},
  volume    = {220},
  number    = {1},
  pages     = {44 -- 49},
  doi       = {10.1027/2151-2604/a000090},
  year      = {2012},
}