KUŽEL, Petr, DUGAUTIER, C., MOCH, P., LE MARREC, F., KARKUT, M. G. Phase transition in lead titanate thin films: a Brillouin study. Journal of Physics-Condensed Matter. 2002, 14(-), 12187-12300. ISSN 0953-8984. E-ISSN 1361-648X.