TY - JOUR AU - L. Hsu TI - Approximation of non-bounded continuous functions by certain sequences of linear positive operators or polynomials JO - Studia Mathematica PY - 1961 SP - 37 EP - 43 VL - 21 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4064/sm-21-1-37-43/ DO - 10.4064/sm-21-1-37-43 LA - en ID - 10_4064_sm_21_1_37_43 ER -