%0 Journal Article %A Piotr Pragacz %A Jan Ratajski %T Pieri Type formula for isotropic Grassmannians; the operator approach. %J Manuscripta mathematica %D 1993 %P 127-152 %V 79 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1993__79_1_155829/ %F MM2_1993__79_1_155829