%0 Journal Article %A A. A. Vasil'eva %T Closed spans in vector-valued function spaces and their approximative properties %J Izvestiya. Mathematics %D 2004 %P 709-747 %V 68 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_2004_68_4_a2/ %G en %F IM2_2004_68_4_a2