%0 Journal Article %A Rozenblum, Grigori %T On some analytical index formulas related to operator-valued symbols %J Electronic Journal of Differential Equations %D 2002 %V 2002 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2002__2002__a261/ %G en %F EJDE_2002__2002__a261