@article{BobilloIJUFKS2009,
author={Fernando Bobillo and Miguel Delgado and Juan G\'{o}mez-Romero},
journal={International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems},
number={4},
title={Crisp Representations and Reasoning for Fuzzy Ontologies},
volume={17},
year={2009},
idbdi={yes}
}