@article{albuquerque_silva_2013,  title={Concrete beams fire design using graphs},  volume={6},  ISSN={1983-4195},  url={https://doi.org/10.1590/S1983-41952013000400002},  DOI={10.1590/S1983-41952013000400002},  number={4},  journal={Revista IBRACON de Estruturas e Materiais},  publisher={IBRACON - Instituto Brasileiro do Concreto},  author={Albuquerque, G. B. M. L. and Silva, V. P.},  year={2013},  month={Aug},  pages={513–536} }