@article{LindenbergerKlieglBaltes1992,
  author    = {Lindenberger, Ulman and Kliegl, Reinhold and Baltes, Paul B.},
  title     = {Professional expertise does not eliminate negative age differences in imagery-based memory performance during adulthood},
  year      = {1992},
  language  = {en}
}
@misc{KlieglSmithLindenbergeretal.1993,
  author    = {Kliegl, Reinhold and Smith, Jacqui and Lindenberger, Ulman and Mayr, Ulrich and Krampe, Ralf and Baltes, Paul B.},
  title     = {Max-Planck-Institut f{\"u}r Bildungsforschung Berlin},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-41124},
  year      = {1993},
  language  = {de}
}
@article{LindenbergerBrehmerKliegletal.2008,
  author    = {Lindenberger, Ulman and Brehmer, Y. and Kliegl, Reinhold and Baltes, Paul B.},
  title     = {Benefits of graphic design expertise in old age : compensatory effects of a graphical lexicon?},
  isbn      = {978-0-521-87205-8},
  year      = {2008},
  language  = {en}
}