%0 Journal Article %A A. B. Shishkin %T Spectral synthesis for systems of differential operators with %J Sbornik. Mathematics %D 2003 %P 1865-1898 %V 194 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2003_194_12_a4/ %G en %F SM_2003_194_12_a4