APBS Citation

Baker, N. A., Sept, D., Joseph, S., Holst, M. J., & McCammon, J. A. (2001).
Electrostatics of nanosystems: application to microtubules and the ribosome.
Proceedings of the National Academy of Sciences of the United States of America, 98(18), 10037-41. doi:10.1073/pnas.181342398