%0 Journal Article %A Borwein, Peter B. %T Uniform Approximation by Polynomials with Variable Exponents %J Canadian journal of mathematics %D 1983 %P 547-557 %V 35 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1983-031-7/ %R 10.4153/CJM-1983-031-7 %F 10_4153_CJM_1983_031_7