Optical pumping detection of anomalous NQR spectra of Pr3+ in Pr3+:LaF3
Optical pumping detection of anomalous NQR spectra of Pr3+ in Pr3+:LaF3. Persistent Spectral Hole-Burning, Science and Applications. Vol. 16 of Optical Society of America Technical Digest Series (Optical Society of America, Washington D.C.). 1991; 290-293.