Foster80 J. P. Foster and F. Weinhold, “Natural hybrid orbitals,” J. Am. Chem. Soc., 102 (1980) 7211-18. DOI: 10.1021/ja00544a007 Related Articles: CitationCitationGaussian 09 CitationPopulationThis properties keyword controls printing of molecular orbitals and several types of population analysis and atomic charge assignments.ReferencesRev. A.03 Citation