@article{calixto_souza_maia_2012,  title={Design of slender reinforced concrete rectangular columns subjected to eccentric loads by approximate methods},  volume={5},  ISSN={1983-4195},  url={https://doi.org/10.1590/S1983-41952012000400008},  DOI={10.1590/S1983-41952012000400008},  number={4},  journal={Revista IBRACON de Estruturas e Materiais},  publisher={IBRACON - Instituto Brasileiro do Concreto},  author={Calixto, J. M. and Souza, T. H. and Maia, E. V.},  year={2012},  month={Aug},  pages={548–554} }