@article{GDZPPN002421194,
title = {Convolution Conditions for Convexity, Starlikeness and Spiral-Likeness.},
journal = {Mathematische Zeitschrift},
volume = {162},
year = {1978},
pages = {125-130},
zbl = {0369.30004},
url = {http://dml.mathdoc.fr/item/GDZPPN002421194}
}
Silvermann, H.; Silvia, E.M.; Telage, D. Convolution Conditions for Convexity, Starlikeness and Spiral-Likeness.. Mathematische Zeitschrift, Tome 162 (1978) pp. 125-130. http://gdmltest.u-ga.fr/item/GDZPPN002421194/