%0 Journal Article %A Huynh Mùi %T Cohomology Operations Derived from Modular Invariants. %J Mathematische Zeitschrift %D 1986 %P 151-164 %V 193 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1986__193_173775/ %F MZ_1986__193_173775