%0 Journal Article %A V. E. Kholodovsky %A I. O. Machikhina %T Long-waves principle and phonon spectra of cubic crystal lattices %J Vestnik Ûžno-Uralʹskogo gosudarstvennogo universiteta. Seriâ, Matematika, mehanika, fizika %D 2009 %P 97-104 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/VYURM_2009_1_a16/ %G ru %F VYURM_2009_1_a16