@article{paiva_santiago_bedregal_2019,  title={On BL-Algebras and its Interval Counterpart},  volume={20},  ISSN={2179-8451},  url={https://doi.org/10.5540/tema.2019.020.02.0241},  DOI={10.5540/tema.2019.020.02.0241},  number={2},  journal={TEMA (São Carlos)},  publisher={Sociedade Brasileira de Matemática Aplicada e Computacional},  author={PAIVA, R. and SANTIAGO, R. and BEDREGAL, B.},  year={2019},  month={May},  pages={241–256} }