[1] Nevanlinna R, Einige R. Eindeutigkeitss¨atze in der theorie der meromorphen funktionen. Acta Math, 1926, 48: 367–391

[2] Yang C C, Yi H X. Uniqueness Theory of Meromorphic Functions. Beijing: Science Press, 1995; Kluwer, 2003

[3] Fujimoto H. The uniqueness problem of meromorphic maps into the complex projective space. Nagoya Math J, 1975, 58: 1–23

[4] Yan Q M, Chen Z H. A note on the uniqueness theorem of meromorphic mapping. Science China Ser A, 2006, 49: 360–365

[5] L¨u F, Yi H X. Some results on the uniqueness of meromorphic mappings. Chinese Ann Math Ser B, 2009, 30: 421–426

[6] Chen Z H, Yan Q M. Uniqueness theorem of meromorphic mapping into PN(C) sharing 2N+3 hyperplanes regardless of multiplicities. Intern J Math, 2009, 20(6): 717–726

[7] Chen Z H, Yan Q M. A note on uniqueness problem for meromorphic mapping with 2N + 3 hyperplanes. Science China Math, 2010, 53(10): 2657–2663

[8] Cao T B, Yi H X. Unicity theorems for meromorphic mappings sharing hyperplanes in general position (in Chinese). Sci China Math, 2011, 41(2): 135–144

[9] Ru M. Nevanlinna Theory and its Relation to Diophantine Approximation. Singapore: World Science Pub, 2001

[10] Aihara Y. Unicity theorems for meromorphic mappings with deficiencies. Complex Variables, 2000, 42: 259–268

[11] Hu P C, Li P, Yang C C. Unicity of meromorphic mappings. Kluwer, 2003

[12] Tu Z H, Shang S S. On the existence of singular directions of holomorphic maps from the unit disk into Pn(C). Acta Math Sci, 2010, 30B(5): 1631–1639