1.
Stupka AA. Long-Wave High-Frequency Oscillations in Ionic Crystals with Two Atoms in Elementary Cell. Ukr. J. Phys. [Internet]. 2018 Oct. 11 [cited 2024 Nov. 25];58(9):863. Available from: https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2018362