TY  - JOUR
AU  - Rodrigo Arocena
TI  - A refinement of the Helson-Szegö theorem and the determination of the extremal measures
JO  - Studia Mathematica
PY  - 1981
SP  - 203
EP  - 221
VL  - 71
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/sm-71-2-203-221/
DO  - 10.4064/sm-71-2-203-221
LA  - en
ID  - 10_4064_sm_71_2_203_221
ER  -