@article{13669,
      author = {Ensthaler, Juergen, and Völker, Stefan. and Block,  Ulrich. and Ensthaler, Jürgen, and Bosch, Wolfgang, and  Voelker, Stefan,},
      url = {http://tind.wipo.int/record/13669},
      title = {Handbuch urheberrecht und internet /},
      recid = {13669},
      pages = {497 pages ;},
}