%0 Journal Article %A Cohen, Stephen D. %T Proof of a Conjecture of Chowla and Zassenhaus on Permutation Polynomials %J Canadian mathematical bulletin %D 1990 %P 230-234 %V 33 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1990-036-3/ %R 10.4153/CMB-1990-036-3 %F 10_4153_CMB_1990_036_3