V. N. Kruchinin, E. V. Spesivtsev, S. V. Rykhlitskii, V. A. Gritsenko, F. Mehmood, T. Mikolajick, U. Schroeder, “Optical properties of ferroelectric films Hf$_x$Zr$_y$O$_2$ and La : Hf$_x$Zr$_y$O$_2$ according to ellipsometry data”, Optics and Spectroscopy, 130:3 (2022), 365–368
