%0 Journal Article %A Devore, Ronald A. %A Leviatan, D. %A Yu, Xiang Ming %T LP Approximation by Reciprocals of Trigonometric and Algebraic Polynomials %J Canadian mathematical bulletin %D 1990 %P 460-469 %V 33 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1990-075-1/ %R 10.4153/CMB-1990-075-1 %F 10_4153_CMB_1990_075_1