Theory of the dielectric constant in the individual-ion model of ionic and rare-gas crystalsJean Heinrichs1969Physical Review
Magnetic Davydov splittings in the optical absorption spectrum of Cr2O3J.W. AllenR.M. Macfarlaneet al.1969Physical Review
Soft modes, critical fluctuations, and optical properties for a two-valley model of gunn-instability semiconductorsE. PytteH. Thomas1969Physical Review
Effects of resonant phonon interactions on shapes of impurity absorption linesSergio RodriguezTheodore D. Schultz1969Physical Review