@article{velde2001,
  title={Chemistry with ADF},
  author={G. te Velde and F. Matthias Bickelhaupt and Evert Jan Baerends and Célia Fonseca Guerra and S. J. A. van Gisbergen and J. G. Snijders and Tom Ziegler},
  year={2001},
  journal={Journal of Computational Chemistry},
  doi={10.1002/jcc.1056},
  url={https://doi.org/10.1002/jcc.1056}
}