%0 Journal Article %A Krystyna Ziętak %T Evaluation of coefficients of a double Chebyshev series of the function g(p(x+y)) %J Applicationes Mathematicae %D 1988 %P 137-140 %V 20 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/am-20-1-137-140/ %R 10.4064/am-20-1-137-140 %G en %F 10_4064_am_20_1_137_140