SEARCH Articles Figures Tables Dirac equation Dirac-Fock Dirac-Fock equations construction Dirac-Hartree-Fock equations approximations Dirac-Hartree-Fock equations ground state Dirac-Hartree-Fock-Roothaan Matrix Equations Equation Dirac-Hartree-Fock Fock equations Kramers-Restricted 2-Spinor Matrix Dirac-Hartree-Fock Equations Matrix Dirac-Hartree-Fock Equations in a 2-Spinor Basis Spin-orbit operators Dirac-Fock equations