%0 Journal Article %A Pierre, R. %T Extremal Properties of Constrained Tchebychev Polynomials %J Canadian journal of mathematics %D 1986 %P 907-924 %V 38 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1986-044-1/ %R 10.4153/CJM-1986-044-1 %F 10_4153_CJM_1986_044_1