PDB2PQR Citation

Dolinsky, T. J., Czodrowski, P., Li, H., Nielsen, J. E., Jensen, J. H., Klebe, G., & Baker, N. A. (2007).
PDB2PQR: expanding and upgrading automated preparation of biomolecular structures for molecular simulations.
Nucleic acids research, 35(Web Server issue), W522-5. doi:10.1093/nar/gkm276