%0 Journal Article %A R. V. Shamin %T Spaces of initial data for differential equations in a~Hilbert space %J Sbornik. Mathematics %D 2003 %P 1411-1426 %V 194 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2003_194_9_a5/ %G en %F SM_2003_194_9_a5