TY - JOUR AU - George S. Shapiro TI - Balayage by Fourier transforms with sparse frequencies in compact abelian groups JO - Colloquium Mathematicum PY - 1981 SP - 151 EP - 157 VL - 44 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-44-1-151-157/ DO - 10.4064/cm-44-1-151-157 LA - en ID - 10_4064_cm_44_1_151_157 ER -