TY  - JOUR 
T1  - Small amplitude oscillations of sine-gordon vortex states in planar magnets in three dimensions
JO  - Brazilian Journal of Physics
A1  - Pereira, A . R.
SN  - 0103-9733
UL  - 10.1590/S0103-97332002000400025
VL  - 32 
Y1  - 2002
PB  - Brasil 
ER  -