@article{26989,
      author = {Drexl, Josef. [et Al.], and Ullrich, Hanns, and Drexl,  Josef,},
      url = {http://tind.wipo.int/record/26989},
      title = {Technology and competition : contributions in honour of  Hanns Ullrich /},
      recid = {26989},
      pages = {x, 744 pages :},
}