Daniel J. Sullivan

Bernholc, J., Briggs, E. L., Sullivan, D. J., Brabec, C. J., Nardelli, M. B., Rapcewicz, K., … Wensell, M. (1997). Real space multigrid methods for large scale electronic structure problems. International Journal of Quantum Chemistry, 65(5), 531–543. https://doi.org/10.1002/(SICI)1097-461X(1997)65:5<531::AID-QUA18>3.0.CO;2-5