@article{20035,
      note = {Originally presented as the author's thesis  (doctoral)--Universität Konstanz, 1991.},
      author = {Hackbarth, Ralf,},
      url = {http://tind.wipo.int/record/20035},
      title = {Grundfragen des Benutzungszwangs im  Gemeinschaftsmarkenrecht /},
      recid = {20035},
      pages = {lii, 257 pages ;},
}