@article{1029002355,
author = {Hayman, W. K.},
title = {The logarithmic derivative of multivalent functions.},
journal = {Michigan Math. J.},
volume = {27},
number = {1},
year = {1980},
pages = { 149-179},
language = {en},
url = {http://dml.mathdoc.fr/item/1029002355}
}
Hayman, W. K. The logarithmic derivative of multivalent functions.. Michigan Math. J., Tome 27 (1980) no. 1, pp. 149-179. http://gdmltest.u-ga.fr/item/1029002355/