TY - BOOK AU - Dzjub, Ivan Petrovyč AU - Nikolaev, V. A. ED - Academy of Sciences of Ukrainian SSR TI - A new approach to the theory of spin waves in the theory of isotropic Heisenberg Ferromagnet at low temperatures / T2 - ITP ; PY - 1967/// CY - Kiev, KW - ფიზიკა ER -