Physical Review · 1951 · 99 citations · 0 references
Natural SciencesMaterials SciencePhysicsElectronic MaterialsOptical MaterialsOpticsOptical Properties Of MaterialsOptical Properties Of SemiconductorsOptical Properties Of SolidsOptical SpectroscopyOptoelectronic MaterialsPhotochemistryOptical AbsorptionOptical Absorption CoefficientOptical Absorption Spectra