Lutsenko И. С. ., Zakharov П. В. ., Sharapova Ю. Р. ., and Starostenkov М. Д. ., “Manifestation of instability in clusters of high-amplitude excitations crystal lattice of composition A3B”, MTD, vol. 3, no. 4 (6), pp. 43–47, Dec. 2021.