@article{1029000208,
author = {Robertson, M. S.},
title = {Univalent functions $f(z)$ for which $zf^{\prime} (z)$ is spirallike.},
journal = {Michigan Math. J.},
volume = {16},
number = {1},
year = {1969},
pages = { 97-101},
language = {en},
url = {http://dml.mathdoc.fr/item/1029000208}
}
Robertson, M. S. Univalent functions $f(z)$ for which $zf^{\prime} (z)$ is spirallike.. Michigan Math. J., Tome 16 (1969) no. 1, pp. 97-101. http://gdmltest.u-ga.fr/item/1029000208/