TY - JOUR AU - Henry Helson TI - Hankel forms and sums of random variables JO - Studia Mathematica PY - 2006 SP - 85 EP - 92 VL - 176 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm176-1-6/ DO - 10.4064/sm176-1-6 LA - en ID - 10_4064_sm176_1_6 ER -