D.  Ghosh, Kosenkov, D., Vanovschi, V., Flick, J., Kaliman, I., Shao, Y., Gilbert, A. T. B., Krylov, A. I., and Slipchenko, L. V., ?Effective fragment potential method in Q-CHEM: a guide for users and developers?, Journal of Computational Chemistry, vol. 34, no. 12, pp. 1060-1070, 2013.