@article{18049,
      author = {Bernhardt, Wolfgang, and Kra[beta]er, Rudolf. and  Krabetaer, Rudolf. and Krasser, Rudolf, and Bernhardt,  Wolfgang. and Kraßer, Rudolf,},
      url = {http://tind.wipo.int/record/18049},
      title = {Lehrbuch des Patentrechts : Recht der Bundesrepublik  Deutschland, Europäisches und Internationales Patentrecht  /},
      recid = {18049},
      pages = {xxi, 741 pages ;},
}