@article{MZ_1982__181_173232,
     author = {Hu Hsiung Li and William M. Singer},
     title = {Resolutions of {Modules} {Over} the {Steenrod} {Algebra} and the {Cassical} {Theory} of {Invariants.}},
     journal = {Mathematische Zeitschrift},
     pages = {269--286},
     publisher = {mathdoc},
     volume = {181},
     year = {1982},
     zbl = {0504.55017},
     url = {http://geodesic.mathdoc.fr/item/MZ_1982__181_173232/}
}