TY - JOUR AU - Krystyna Ziętak TI - Evaluation of coefficients of a double Chebyshev series of the function g(p(x+y)) JO - Applicationes Mathematicae PY - 1988 SP - 137 EP - 140 VL - 20 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/am-20-1-137-140/ DO - 10.4064/am-20-1-137-140 LA - en ID - 10_4064_am_20_1_137_140 ER -