%0 Journal Article %A Nelson, R. %T Pseudovaluations of Polynomials %J Canadian journal of mathematics %D 1967 %P 1293-1302 %V 19 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1967-118-2/ %R 10.4153/CJM-1967-118-2 %F 10_4153_CJM_1967_118_2