T. Verstraelen

The Gradient Curves Method:  An Improved Strategy for the Derivation of Molecular Mechanics Valence Force Fields from ab Initio Data.

T. Verstraelen, D. Van Neck, P. W. Ayers, 2007, Journal of chemical theory and computation.

The Significance of Parameters in Charge Equilibration Models.

T. Verstraelen, D. Van Neck, V. Van Speybroeck, 2011, Journal of chemical theory and computation.