1. Persistent Spectral Hole-Burning: Science and Applications;Rebane,1987
2. Persistent Spectral Hole-Burning: Science and Applications;Haarer,1987
3. Persistent Spectral Hole-Burning: Science and Applications;Macfarlane,1987
4. Persistent Spectral Hole-Burning: Science and Applications;Hayes,1987
5. Persistent Spectral Hole-Burning: Science and Applications;Sievers,1987