%0 Journal Article %A Hans Ligaard %A Ib Madsen %T Homology Operations in the Eilenberg-Moore Spectral Sequence. %J Mathematische Zeitschrift %D 1975 %P 45-54 %V 143 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1975__143_172210/ %F MZ_1975__143_172210