@article{MayrKliegl2003,
  author    = {Mayr, Ulrich and Kliegl, Reinhold},
  title     = {Differential effects of cue changes and task changes on task-set selection costs},
  issn      = {0278-7393},
  year      = {2003},
  language  = {en}
}
@article{KlieglKrampeMayr2003,
  author    = {Kliegl, Reinhold and Krampe, Ralf-Thomas and Mayr, Ulrich},
  title     = {Formal models of age differences in task complexity effects},
  year      = {2003},
  language  = {en}
}