%0 Journal Article %A N. I. Shkil' %T Asymptotic solution of a system of linear differential equations in the case of multiple roots of the characteristic equation %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1964 %P 176-185 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1964_2_a21/ %G ru %F IVM_1964_2_a21