@article{KlieglMayrJunkeretal.1999,
  author    = {Kliegl, Reinhold and Mayr, Ulrich and Junker, Martina and Fanselow, Gisbert},
  title     = {Testing age invariance in language processes},
  isbn      = {0-7923-8526-8},
  year      = {1999},
  language  = {en}
}
@article{FanselowKlingelMayretal.1999,
  author    = {Fanselow, Gisbert and Klingel, Rheinhold and Mayr, Ulrich and Junker, Martina},
  title     = {Test age invariance in language processing},
  year      = {1999},
  language  = {en}
}
@article{FanselowKlieglSchlesewsky1999,
  author    = {Fanselow, Gisbert and Kliegl, Reinhold and Schlesewsky, Matthias},
  title     = {Processing difficulty and principles of grammar},
  year      = {1999},
  language  = {en}
}