TY  - RPRT
TI  - A Convexity Theorem.
AU  - R Salem
AU  - A Zygmund
PY  - 1948
DO  - 10.1073/pnas.34.9.443
UR  - https://pubmed.ncbi.nlm.nih.gov/16578303/
ID  - 16578303
ER  -