TY - JOUR TI - Classes of functions and Riemann means of Fourier series T3 - Acta scientiarum mathematicarum AU - Kádár F. PY - 1999 LA - English SN - 0001-6969 UR - http://acta.bibl.u-szeged.hu/15776/1/math_065_numb_003_004_577-584.pdf ER -