@article{1138043595,
author = {Yang, Chung Chun and Hu, Pei Chu},
title = {On the value distribution of $ff^{(k)}$},
journal = {Kodai Math. J.},
volume = {19},
number = {1},
year = {1996},
pages = { 157-167},
language = {en},
url = {http://dml.mathdoc.fr/item/1138043595}
}
Yang, Chung Chun; Hu, Pei Chu. On the value distribution of $ff^{(k)}$. Kodai Math. J., Tome 19 (1996) no. 1, pp. 157-167. http://gdmltest.u-ga.fr/item/1138043595/