@incollection{ echtler2003paarti,
      key =      {Echtler et al},
      author =      {Echtler, Florian and Sturm, Fabian and Kindermann, Kay and Klinker, Gudrun 
and Stilla, Joachim and Trilk, Joern and Najafi, Hesam},
      title =      {The Intelligent Welding Gun: Augmented Reality for Experimental Vehicle Construction},
      booktitle =   {Virtual and Augmented Reality Applications in Manufacturing, Chapter 17},
      editor =      {S.K Ong and A.Y.C Nee},
      publisher = {Springer Verlag},
      year =      {2003},
      url =         {}
}