@article{recalde_gastal_bessa_schwetz_2015,  title={Numerical analysis of waffle slabs in flexure considering the effects of
               concrete cracking},  volume={8},  ISSN={1983-4195},  url={https://doi.org/10.1590/S1983-41952015000200009},  DOI={10.1590/S1983-41952015000200009},  number={2},  journal={Revista IBRACON de Estruturas e Materiais},  publisher={IBRACON - Instituto Brasileiro do Concreto},  author={Recalde, B. R. B. and Gastal, F. P. S. L. and Bessa, V. R. D'A and Schwetz, P. F.},  year={2015},  month={Mar},  pages={225–247} }