@article{45139,
      author = {Müller, Martin,},
      url = {http://tind.wipo.int/record/45139},
      title = {The problem-solution approach revisited.},
      doi = {https://doi.org/10.1093/jiplp/jpab184},
      recid = {45139},
      pages = {1 online resource (pages 199-209)},
}