@article{01481759,
title = {On certain class of rational functions whose derivatives have positive real parts.},
journal = {Matematichki Vesnik},
volume = {49},
year = {1997},
pages = {85-88},
zbl = {0947.30005},
language = {en},
url = {http://dml.mathdoc.fr/item/01481759}
}
Joshi, S.B.; Obradović, Milutin. On certain class of rational functions whose derivatives have positive real parts.. Matematichki Vesnik, Tome 49 (1997) pp. 85-88. http://gdmltest.u-ga.fr/item/01481759/