@article{GDZPPN002060965,
title = {Hadamard Products of Schlicht Functions and the P\'olya-Schoenberg Conjecture},
journal = {Commentarii mathematici Helvetici},
volume = {48},
year = {1973},
pages = {119-136},
zbl = {0261.30015},
url = {http://dml.mathdoc.fr/item/GDZPPN002060965}
}
Ruscheweyh, St.; Sheil-Small, T. Hadamard Products of Schlicht Functions and the Pólya-Schoenberg Conjecture. Commentarii mathematici Helvetici, Tome 48 (1973) pp. 119-136. http://gdmltest.u-ga.fr/item/GDZPPN002060965/