%0 Journal Article %A G. Dzhangibekov %A J. M. Odinabekov %T On the Noether theory of two-dimensional singular operators and applications to boundary-value problems for systems of fourth-order elliptic equations %J Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ %D 2020 %P 7-13 %V 26 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/VSGU_2020_26_1_a0/ %G ru %F VSGU_2020_26_1_a0