TY - JOUR AU - Leviatan, D. AU - Lubinsky, D. S. TI - Degree of Approximation by Rational Functions with Prescribed Numerator Degree JO - Canadian journal of mathematics PY - 1994 SP - 619 EP - 633 VL - 46 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1994-033-1/ DO - 10.4153/CJM-1994-033-1 ID - 10_4153_CJM_1994_033_1 ER -