@inproceedings{ijcai2005p39,
  title     = {Partial, Vague Knowledge for Similarity Measures},
  author    = {Steffens, Timo},
  booktitle = {Proceedings of the Nineteenth International Joint Conference on
               Artificial Intelligence, {IJCAI-05}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  pages     = {21--25},
  year      = {2005},
  url       = {https://ijcai.org/proceedings/2005/39},
}