@article{KJM_2011_35_1_a10,
     author = {Shanpeng Zeng and Yan Yang and Yuesheng Wu},
     title = {The improvement of the value distribution on $f+a(f')^{n}$},
     journal = {Kragujevac Journal of Mathematics},
     pages = {139 },
     publisher = {mathdoc},
     volume = {35},
     number = {1},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2011_35_1_a10/}
}