SEARCH Articles Figures Tables A Computer-Algebraic Approach to the Derivation of Feynman-Goldstone Perturbation Expansions for Open-Shell Atoms and Molecules Atoms in open-shell molecules Cluster Theory for Open-Shell Molecules Coupled-cluster approximation, open-shell molecules Electronic Spectroscopy of High Temperature Open-Shell Polyatomic Molecules Force constants, open-shell molecules Functional Theory for Open-Shell Molecules Many-body perturbation theory open-shell molecules Matrix diagonalization, open-shell molecules Molecular beam electric resonance of open shell molecules Molecular orbitals, open-shell molecules Open shell Open-shell organic molecules Open-shell transition-metal complexe molecules Organic molecules closed/open shell Quantum chemistry, open-shell molecules Reference functions, open-shell molecules Slater determinants, open-shell molecules Spin adaptation open-shell molecules Spin contamination open-shell molecules Spin multiplicity, open-shell molecules Symmetry breaking open-shell molecules