%0 Journal Article %A V. F. Butuzov %T Asymptotic behaviour and stability of solutions of a~singularly perturbed elliptic problem with a~triple root of the degenerate equation %J Izvestiya. Mathematics %D 2017 %P 481-504 %V 81 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_2017_81_3_a1/ %G en %F IM2_2017_81_3_a1