@article{CMH_1973__48_139542,
     author = {St. Ruscheweyh and T. Sheil-Small},
     title = {Hadamard {Products} of {Schlicht} {Functions} and the {P\'olya-Schoenberg} {Conjecture}},
     journal = {Commentarii mathematici Helvetici},
     pages = {119--136},
     publisher = {mathdoc},
     volume = {48},
     year = {1973},
     zbl = {0261.30015},
     url = {http://geodesic.mathdoc.fr/item/CMH_1973__48_139542/}
}