Invariant Rational Functions and a Problem of Steenrod.
Inventiones mathematicae, Tome 7 (1969), pp. 148-158
@article{IM_1969__7_141959,
author = {R.G. SWAN},
title = {Invariant {Rational} {Functions} and a {Problem} of {Steenrod.}},
journal = {Inventiones mathematicae},
pages = {148--158},
year = {1969},
volume = {7},
zbl = {0186.07601},
url = {http://geodesic.mathdoc.fr/item/IM_1969__7_141959/}
}
R.G. SWAN. Invariant Rational Functions and a Problem of Steenrod.. Inventiones mathematicae, Tome 7 (1969), pp. 148-158. http://geodesic.mathdoc.fr/item/IM_1969__7_141959/