Magnetic-field radiationless-transition stimulation in ruby luminescence

Nonequilibrium phonons in the process of ruby luminescence in a magnetic field

Effect of a magnetic field on the luminescence and absorption of R and N lines of ruby

Luminescence and Absorption of Excited Ruby

The Polarization of Luminescence of Ruby

Temperature dependence of the luminescence from heavily doped ruby

Two-photon Excitation of Luminescence in Ruby Crystals