Transitive approximation of fuzzy relations by alternating closures and openings

@article{Baets2003TransitiveAO,
  title={Transitive approximation of fuzzy relations by alternating closures and openings},
  author={Bernard De Baets and Hans De Meyer},
  journal={Soft Comput.},
  year={2003},
  volume={7},
  pages={210-219}
}