%0 Journal Article %A Nontas E. Kechagias %T Modular invariant theory, homology operations, and the transfer between rings of invariants of parabolic subgroups %J Ευκλείδης Γ %D 1993 %P 79-88 %V 38 %I mathdoc %U http://geodesic.mathdoc.fr/item/EUG_1993__38_a16/ %G gr %F EUG_1993__38_a16