%0 Journal Article %A V. A. Lazarev %T Perturbation of a two-soliton solution of the Korteweg--de~Vries equation in the case of close amplitudes %J Teoretičeskaâ i matematičeskaâ fizika %D 1999 %P 434-440 %V 118 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1999_118_3_a13/ %G ru %F TMF_1999_118_3_a13