@article{babu_benipal_singh_2010,  title={Constitutive model for bimodular elastic damage of concrete},  volume={7},  ISSN={1679-7825},  url={https://doi.org/10.1590/S1679-78252010000200003},  DOI={10.1590/S1679-78252010000200003},  number={2},  journal={Latin American Journal of Solids and Structures},  publisher={Individual owner},  author={Babu, Ravi Raveendra and Benipal, Gurmail S and Singh, Arbind K},  year={2010},  pages={143–166} }