G. Burns, D.F. O'Kane, R.S. Title. Phys. Rev. 167, 2, 314 (1968)
A.M. Glass. J. Chem. Phys. 50, 4, 1501 (1969)
W. Jia, H. Liu, R. Knutson, W.M. Yen. Phys. Rev. B41, 16, 10 906 (1990)
P.I. Macfarlane, K. Holliday, J.F.H. Nicholls, B. Henderson. J. Phys.: Condens. Matter 7, 9657 (1995)
C. Fisher, S. Kapphan, Xi-qi Feng, Ning Cheng. Radiation Effects and Defects in Solids 135, 1--4, 199 (1995)
V. Trepakov, A. Skvortsov, S. Kapphan, L. Jastrabik, V. Vorlichek. Ferroelectrics 239, 297 (2000)
F. Lhomme, P. Bourson, M.D. Fontana, G. Malovichko, M. Aillerie, E. Kokanyan. J. Phys.: Condens. Matter 10, 1137 (1998)
G.M. Salley, S.A. Basun, G.F. Imbusch, A.A. Kaplyanskii, S. Kapphan, R.S. Meltzer, U. Happek. J. Lumin. 83--84, 423 (1999)
G.M. Salley, S.A. Basun, A.A. Kaplyanskii, R.S. Meltzer, K. Polgar, U. Happek. J. Lumin. 87--89, 1133 (2000)
G.I. Malovichko, V.G. Grachev, S.N. Lukin. Sov. Phys. Solid State 28, 553 (1986)
G. Corradi, A.V. Chadwick, A.R. West, K. Cruickshank, M. Paul. Radiation Effects and Defects in Solids 134, 1--4, 219 (1995)
G. Malovichko, V. Grachev, E. Kokanyan, O. Schirmer. Phys. Rev. B59, 14, 9113 (1999) see references therein
J. Diaz-Caro, J. Garcia-Sole, D. Bravo, J.A. Sanz-Garcia, F.J. Lopez, F. Jaque. Phys. Rev. B54, 18, 13042. (1996)
G. Corradi, G. Sothe, J.-M. Spaeth, K. Polgar. J. Phys. Condens. Matter 3, 1901 (1991)
J. Diaz-Caro, J. Garcia-Sole, J.L. Martinez, B. Henderson, F. Jaque, T.P.J. Han. Optical Materials 10, 69 (1998)
V. Hommerich, K.L. Bray. Phys. Rev. B51, 13, 8595 (1995)
B. Henderson, G.F. Imbusch. Optical Spectroscopy of Inorganic Solids. Oxford University Press. Clarendon, Oxford (1989)
A. Kaminska, J.E. Dmochowski, A. Suchocki, J. Garcia-Sole, F. Jaque, L. Arizmendi. Phys. Rev. B60, 11, 7707 (1999)
A. Kaminska, A. Suchocki, M. Grinberg, J. Garcia-Sole, F. Jacue, L. Arizmendi. J. Lumin. 87--89 (2000)
G.M. Salley, S.A. Basun, A.A. Kaplyanskii, A.B. Kutsenko, Th. Troster, G.F. Imbusch, S. Kapphan, K. Polgar, R.S. Meltzer, U. Happek (to be published)
P.I. Macfarlane, K. Holliday, B. Henderson. Chem. Phys. Lett. 252, 311 (1995)
V. Dierolf, A.A. Kaplyanskii, S. Kapphan, A.B. Kutsenko. Proceedings of the ICDIM'2000. Radiation Effects and Defects in Solids in print (2001)
B.B. Laird, J.L. Skinner. J. Chem. Phys. 90, 6, 3274 (1989)
V. Grachev, G. Malovichko. Phys. Rev. B62, 12, 7779 (2000)
P. Shellenberg, J. Friedrich, J. Kikas. J. Chem. Phys. 100, 8, 5501 (1994)
A. Kaminska, A. Suchocki, L. Arizmendi, D. Callejo, F. Jaque, M. Grinberg. Phys. Rev. B62, 16, 10 802 (2000)