TY - JOUR AU - Dunham, Charles B. TI - Non-Convexity in Best Complex Chebyshev Approximation by Rational Functions JO - Canadian mathematical bulletin PY - 1974 SP - 115 EP - 116 VL - 17 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1974-021-3/ DO - 10.4153/CMB-1974-021-3 ID - 10_4153_CMB_1974_021_3 ER -