%0 Journal Article %A A. B. Vasil'eva %A O. E. Omel'chenko %T Periodic step-like contrast structures for a singularly perturbed parabolic equation %J Differencialʹnye uravneniâ %D 2000 %P 209-218 %V 36 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2000_36_2_a8/ %G ru %F DE_2000_36_2_a8