%0 Journal Article %A N. N. Akhmediev %A V. I. Korneev %T Modulation instability and periodic solutions of the nonlinear Schr\"odinger equation %J Teoretičeskaâ i matematičeskaâ fizika %D 1986 %P 189-194 %V 69 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1986_69_2_a2/ %G ru %F TMF_1986_69_2_a2