%0 Journal Article %A N. Kh. Ibragimov %T Invariant variational problems and conservation laws (remarks on Noether's theorem) %J Teoretičeskaâ i matematičeskaâ fizika %D 1969 %P 350-359 %V 1 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1969_1_3_a4/ %G ru %F TMF_1969_1_3_a4