SEARCH Articles Figures Tables Cluster molecules pairwise additivity Intermolecular potentials pairwise additivity Pairwise Pairwise additive Pairwise additive Pairwise additive approximation Pairwise additive interactions, hydrogen Pairwise additive potential Pairwise additivity assumption Pairwise-additivity interactions Pairwise-additivity potentials Potential energy pairwise additivity Potential energy surfaces pairwise additive The Pairwise Additive Approximation