%0 Journal Article %A Samson Saneblidze %T Filtered model of a fibration and rational obstruction theory. %J Manuscripta mathematica %D 1992 %P 111-136 %V 76 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1992__76_1_155743/ %F MM2_1992__76_1_155743