Hypersensitive Transitions in Rare-Earth Ions

Temperature dependence of the transition cross sections of rare-earth ions

Transition intensities between excited states of rare earth ions in crystals

The Possibility of Gain among the 5D-4F Transitions of the Rare Earth Ions

Regularities of single-phonon nonradiative transitions in rare-earth ions

Polarization characteristics of the most intense two-photon transitions of rare-earth ions in crystals

Some forbidden two-photon transitions in crystals with rare-earth ions