selected publications

• academic article

  • Research Problems of CAD-Systems.  CIRP Annals.  34:183-186. 1985
  • Cad-induced changes in design work.  Robotics and Computer-integrated Manufacturing.  1984
  • Interpretation of freehand drawings for mechanical design processes.  Computers & Graphics.  8:351-369. 1984

• chapter

  • Virtual Clay Modelling.  Springer eBooks. 162-175. 1997
  • Feature Oriented System Design for Geometric Modeling.  . 1989