@article{Heinrichs1984,
  author    = {Heinrichs, Horst},
  title     = {Graphisch interaktiver FEM-Berechnungsarbeitsplatz},
  series = {Konstruktion, Elemente, Methoden. 21 (1984), H. 2},
  journal   = {Konstruktion, Elemente, Methoden. 21 (1984), H. 2},
  pages     = {82 -- 85},
  year      = {1984},
  language  = {de}
}
@article{Heinrichs1989,
  author    = {Heinrichs, Horst},
  title     = {Verbindung von CAD und CAE mittels der systemneutralen CAD I Schnittstelle},
  pages     = {391 -- 408},
  year      = {1989},
  language  = {de}
}
@article{HeinrichsHaub1991,
  author    = {Heinrichs, Horst and Haub, A.},
  title     = {Grafische Oberfl{\"a}chen vereinfachen den FEM-Einsatz},
  series = {CAD-CAM Report. 10 (1991), H. 3},
  journal   = {CAD-CAM Report. 10 (1991), H. 3},
  pages     = {79 -- 85},
  year      = {1991},
  language  = {de}
}
@article{Heinrichs1992,
  author    = {Heinrichs, Horst},
  title     = {STEP bietet mehr},
  publisher = {IKOSS},
  address   = {Stuttgart},
  pages     = {327 -- 344},
  year      = {1992},
  language  = {de}
}
@article{Heinrichs1993,
  author    = {Heinrichs, Horst},
  title     = {Mit Grafik schafft FEM den Durchbruch},
  series = {Maschinen, Anlagen, Verfahren (1993)},
  journal   = {Maschinen, Anlagen, Verfahren (1993)},
  isbn      = {0343-043X},
  pages     = {58 -- 59},
  year      = {1993},
  language  = {de}
}