%0 Journal Article %A V. N. Bobochko %T Unstable and multiple elements of the spectrum in a~system of singularly perturbed differential equations %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1998 %P 3-13 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1998_9_a0/ %G ru %F IVM_1998_9_a0