. Barker, Bilz (198a) Birnbaum, Belayev Blinc Bobb, 1970.

H. Bilz and W. Weber, Physics of Latent images in silver halides

G. Birnbaum, E. R. Cohen, and J. Chem, Ph1's, p.2885, 1970.

W. H. Bonner, L. G. Grodkiewicz, and . Van-uitert, The growth of K0.6Li0.4NbO3 crystals for electro-optic and non-linear applications, Journal of Crystal Growth, vol.1, issue.5, p.318
DOI : 10.1016/0022-0248(67)90040-1

V. Samulionis and Y. Stritskij, Ph7's. Statu.s Solicli a 96, p.0, 1986.

. Denoyer, Denoyer, Thèse d'état, centre de documentation CNRS N' 409547, 1977.

M. Fontana, H. Fontana, G. Ldrissi, K. Kugel, and . Wojcik, re-examined: dynamics of the soft phonon and the central peak, Journal of Physics: Condensed Matter, vol.3, issue.44, p.8695, 1991.
DOI : 10.1088/0953-8984/3/44/014

F. Francombe, M. H. Lewis, and B. , Aua (-r7,s1o11on, p.175, 1958.

. Fukuda, Single Crystals, Japanese Journal of Applied Physics, vol.8, issue.1, p.122, 1969.
DOI : 10.1143/JJAP.8.122

). Gordmaine, Mixing of Light Beams in Crystals, Physical Review Letters, vol.7, issue.1, pp.19-107, 1961.
DOI : 10.1103/PhysRevLett.7.118

. Gunter, Hafid (1e87) Hafid (1e92) Herzberg, 1970.

P. M. Gunteç and S. K. Asbeck, crystals, Applied Physics Letters, vol.26, issue.6, pp.461-463
DOI : 10.1063/1.1656831

G. Herzberg, Infrared and Raman Spectra of Polyatomic Molecules., The Journal of Physical Chemistry, vol.50, issue.3, 1975.
DOI : 10.1021/j150447a021

K. Kania-d-roleder and M. Lukaszewski, The ferroelectric phase in AgNbO3, Ferroelectrics, vol.48, issue.1, p.265
DOI : 10.1016/0022-0248(80)90052-4

J. Kozlovsky, W. Lenttu, E. E. Lotta, A. Moser, and G. L. , Generation of 41 mW of blue radiation by frequency doubling of a GaAlAs diode laser, Applied Physics Letters, vol.22, issue.23, pp.2291-2292
DOI : 10.1109/JLT.1987.1075544

G. Kugel and M. Fontana, Dynamical properties, sequence and mechanism of the phase transition and non-linearities in ABO3 ferroelectrics, Ferroelectrics, vol.3, issue.1, p.89, 1991.
DOI : 10.1103/PhysRevLett.25.440

. Landolt-bôrnstein, Numerical Data and Functional Relationships in Science and Technology

R. Migoni, . Migoni, D. Bilz, and . Bauerle, Origin of Raman Scattering and Ferroelectricity in Oxidic Perovskites, Physical Review Letters, vol.13, issue.17, p.1155, 1976.
DOI : 10.1103/PhysRevB.13.271

. Rocchiccioli, Comparaison des spectres d'absorption infrarouge de niobates et tantalates de m??taux monovalents, Spectrochimica Acta Part A: Molecular Spectroscopy, vol.29, issue.1, p.93, 1973.
DOI : 10.1016/0584-8539(73)80011-X