@article{NSJOM_2009_39_2a_1,
     author = {A. Banerjee and S. Mukherjee},
     title = {Uniqueness of

 meromorphic functions whose $n$-th derivative share one or two

 values},
     journal = {Novi Sad Journal of Mathematics},
     pages = {7-19},
     publisher = {mathdoc},
     volume = {39},
     number = {2},
     year = {2009},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2009_39_2a_1/}
}