SEARCH Articles Figures Tables Effective Hamiltonian valence-only Effective valence Hamiltonian method Effective valence-shell Hamiltonian Hamiltonian Valence-only spin-orbit Hamiltonian valence universal Hamiltonian valence-effective Hamiltonian valence-electron Molecular method: valence effective hamiltonian Poly valence effective hamiltonian calculation Polymers treated with the valence effective Hamiltonian Quantum chemistry Valence effective Hamiltonian Valence Bond Formalism Using an Effective Hamiltonian Valence Bond Formalism Using the Exact Hamiltonian Valence effective Hamiltonian technique Valence only) Hamiltonian Valence shell Hamiltonian theory Valence-Only Model Hamiltonian Valence-only effective Hamiltonians