%0 Journal Article %A V. R. Struletskaya %A V. Yu. Subochev %A A. M. Chebotarev %T A series of invariant characteristics of extremum and the logarithmic asymptotic of Laplace integrals %J Matematičeskie zametki %D 1985 %P 545-553 %V 37 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1985_37_4_a11/ %G ru %F MZM_1985_37_4_a11