@article{duvaut1977,
  title={Inequalities in Mechanics and Physics},
  author={Georges Duvaut and J. L. Lions and Camille John and Stephen C. Cowin},
  year={1977},
  journal={Journal of Applied Mechanics},
  doi={10.1115/1.3424078},
  url={https://doi.org/10.1115/1.3424078}
}