SEARCH Articles Figures Tables 13.2.6 Integral-Direct Methods Diffuse/directional integrating sphere Direct correlation function integrals Direct current integration Direct exchange integral Direct indefinite integration Direct integration methods Direct integration, molecular systems Direct integrity tests Direct-computation integral methods Effective direct integrals Integral-direct Fock matrix evaluation Integral-direct Hartree-Fock theory Integral-direct algorithm Integral-direct algorithm parallel Integrate direct indefinite integration Integrated Pollution Prevention and Control IPPC) Directive Numerical or direct integration and other approximate methods Surface integral equation direct method The Coulomb (Direct) and Exchange Integrals