Koptsik V A

Publications in Math-Net.Ru

1. Lattice dynamics of dyamond type crystals in superspace symmetry
   
   Fizika Tverdogo Tela, 32:4 (1990),  972–979
2. Dispersion of the phonon spectrum of $\mathrm{NaCl}$-type complex crystals within the superspace symmetry concept
   
   Fizika Tverdogo Tela, 29:11 (1987),  3223–3232