%0 Journal Article %A V. A. Yakubovich %T Systems of standard linear differential equations with periodic coefficients (summary of the doctor's Thesis) %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1961 %V 16 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1961_16_1_a27/ %G ru %F RM_1961_16_1_a27