@article{17663,
      author = {Oppenlaender, Karl Heinrich, and Oppenländer, Karl  Heinrich,},
      url = {http://tind.wipo.int/record/17663},
      title = {Patentwesen, technischer Fortschritt und Wettbewerb /},
      recid = {17663},
      pages = {262 pages :},
}