@article{gallivan1999,
  title={Cation-π interactions in structural biology},
  author={Justin P. Gallivan and Dennis A. Dougherty},
  year={1999},
  journal={Proceedings of the National Academy of Sciences},
  doi={10.1073/pnas.96.17.9459},
  url={https://doi.org/10.1073/pnas.96.17.9459}
}