@article{13204,
      note = {Volume I : Substantive Patent Law -- Preamble to Article  89 Volume II : Procedural Patent Law -- Article 90 to  Article 178.},
      author = {Singer, Margarete, and Singer, Margarete, and Stauder,  Dieter,},
      url = {http://tind.wipo.int/record/13204},
      title = {European Patent Convention : a commentary.},
      recid = {13204},
      pages = {volumes <1> :},
}