Theoretical Chemistry Accounts · 1995 · 43 citations · 41 references
Natural SciencesChemistryPhysicsOrganic ChemistryPhysical ChemistryTheoretical ChemistryAb Initio MethodsDensity Functional TheoryElectronic Band StructureElectronic SpectroscopyElectronic StructureMolecular Orbital TheoryAromatic Electronic EffectsElectronic Absorption SpectraElectronic Spectra SimulationPyridine ChemistryQuantum Chemical Spectra Calculation
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Second-order perturbation theory with a CASSCF reference function
Kerstin Andersson, Per Aake. Malmqvist, Bjoern O. Roos et al. · The Journal of Physical Chemistry · 1990 · 3.3K citations
Toward a systematic molecular orbital theory for excited states
James B. Foresman, Martin Head‐Gordon, John A. Pople et al. · The Journal of Physical Chemistry · 1992 · 2.4K citations
Natural Sciences, Chemistry, Physics +11