@article{mezzomo_bedregal_2018,  title={Ordinal Sums of De Morgan Triples},  volume={19},  ISSN={2179-8451},  url={https://doi.org/10.5540/tema.2018.019.02.0181},  DOI={10.5540/tema.2018.019.02.0181},  number={2},  journal={TEMA (São Carlos)},  publisher={Sociedade Brasileira de Matemática Aplicada e Computacional},  author={MEZZOMO, I. and BEDREGAL, B.},  year={2018},  month={May},  pages={181–196} }