SEARCH Articles Figures Tables Approximate LCAO Methods Density LCAO approximation Hartree LCAO approximation Huckel LCAO approximation LCAO LCAO approximation calculations LCAOs Linear combination of atomic orbitals LCAO) approximation Localized Orbitals for Valence Bands LCAO approximation MO-LCAO approximation Molecular orbital LCAO approximation Molecular orbital methods LCAO approximation The MO-LCAO Approximation