%0 Journal Article %A V. P. Maslov %T Global exponential asymptotic behavior of solutions of equations of tunnel type %J Doklady Akademii Nauk %D 1981 %P 1059-1062 %V 261 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1981_261_5_a7/ %G ru %F DAN_1981_261_5_a7