%0 Journal Article %A L. V. Zhukovskaya %A A. M. Savchenko %A M. B. Sadovnikova %T Low-Frequency Spin Oscillation Branch in a~System with Exchange Interaction %J Teoretičeskaâ i matematičeskaâ fizika %D 2004 %P 139-143 %V 138 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_2004_138_1_a10/ %G ru %F TMF_2004_138_1_a10