@article{CMH_1990__65_3_140189,
     author = {H.E.A. Campbell and P.S. Selick},
     title = {Polynomial algebras over the {Steenrod} algebra.},
     journal = {Commentarii mathematici Helvetici},
     pages = {171--180},
     publisher = {mathdoc},
     volume = {65},
     number = {3},
     year = {1990},
     zbl = {0716.55016},
     url = {http://geodesic.mathdoc.fr/item/CMH_1990__65_3_140189/}
}