SEARCH Articles Figures Tables Ethylene, LCAO model HF-LCAO (Hartree Fock Linear model KS-LCAO (Kohn-Sham Linear Model LCAO LCAO-MO model LCAOs Linear combination of atomic orbitals LCAO model) Orbitals LCAO model Semiempirical LCAO Methods in Cyclic-cluster Model The LCAO Model The LCAO-Molecular Orbital Model