TY - JOUR AU - C. Neugebauer TI - Differentiation of trigonometric series JO - Studia Mathematica PY - 1972 SP - 131 EP - 135 VL - 41 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm-41-2-131-135/ DO - 10.4064/sm-41-2-131-135 LA - en ID - 10_4064_sm_41_2_131_135 ER -