%0 Journal Article %A N. N. Nefedov %T Nonstationary contrast structures of spike type in nonlinear %J Doklady Akademii Nauk %D 1994 %P 165-167 %V 336 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1994_336_2_a4/ %G ru %F DAN_1994_336_2_a4