%0 Journal Article %A C. Neugebauer %T Differentiation of trigonometric series %J Studia Mathematica %D 1972 %P 131-135 %V 41 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4064/sm-41-2-131-135/ %R 10.4064/sm-41-2-131-135 %G en %F 10_4064_sm_41_2_131_135