Description of lattice anharmonicity observed in ferroelectrics with unusual three-well local potential von Yevych, R., Vysochanskii, Yu.

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The second order phase transition in Sn₂P₂S₆ crystals: anharmonic oscillator model von Yevych, R.M., Vysochanskii, Yu.M.

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Lattice dynamics and phase transitions in Sn₂P₂S(Se)₆ ferroelectric crystals von Yevych, R.M., Vysochanskii, Yu.M.

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Nonlinear dynamics of ferroelectrics with three-well local potential von Yevych, R., Medulych, M., Vysochanskii, Yu.

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X-ray photoelectron spectroscopy of Sn₂P₂S₆ crystals von Grigas, J., Talik, E., Lazauskas, V., Vysochanskii, Yu.M., Yevych, R., Adamiec, M., Nelkinas, V.

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Valence fluctuations in Sn(Pb)₂P₂S₆ ferroelectrics von Yevych, R., Haborets, V., Medulych, M., Molnar, A., Kohutych, A., Dziaugys, A., Banys, Ju., Vysochanskii, Yu.

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