%0 Journal Article %A A. A. Zhukova %T Rotation number like total characteristic of stability of Hill equation %J Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ %D 2009 %P 26-32 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/VSGU_2009_2_a2/ %G ru %F VSGU_2009_2_a2