TY - JOUR AU - Henry Helson TI - Hankel forms and sums of random variables JO - Studia Mathematica PY - 2006 SP - 85 VL - 176 IS - 1 PB - mathdoc UR - https://geodesic-test.mathdoc.fr/item/STUMA_2006__176_1_284816/ LA - en ID - STUMA_2006__176_1_284816 ER -