%0 Journal Article %A David, John %T On the Endomorphisms of a Polynomial Ring %J Canadian journal of mathematics %D 1976 %P 9-18 %V 28 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1976-002-5/ %R 10.4153/CJM-1976-002-5 %F 10_4153_CJM_1976_002_5