[1]  Beardon  A F, Stephenson K. The uniformization theorem for circle packings.  Indiana Univ Math J, 1990, 39: 1383--1425

[2]  Beardon A F, Stephenson K.  Circle packing in different geometries. Tohoku Math J, 1991, 43:  27--36

[3]  Cater I, Rodin B. An inverse problem for circle packing and conformal mappings. Trans Amer Math Soc, 1992, 334: 861--875

[4]  Dubejko T. Infinite branched circle packings and discrete complex polynomials. J London Math Soc, 1997, 56: 347--368

[5]  Dubejko T. Branched circle packings and discrete Blaschke products. Trans Amer Math Soc, 1995, 347:  4073--4103

[6]  Dubejko T. Approximation of analytic functions with prescribeb boundary conditions by circle-packing maps. Disc Comp Geom, 1997,  17:  67--77

[7]  Rodin B, Sullivan D. The convergence of circle packings to the Riemann mapping. J Differential Geom, 1987, 26: 349--360

[8]  龚升. 简明复分析. 北京: 北京大学出版社, 2004

[9]  Dubejko T, Stephenson K. The branched Schwarz lemma: a classical result via circle packings. Michigan Math J, 1995, 42:  211--243

[10]  He Z X, Rodin B. Convergence of circle packings of finite valence to Riemann mappings. Comm Anal Geom, 1993, 1: 31--41

[11]  Lehto O, Virtanen K I. Quasiconformal Mapping in the Plane, 2nd Ed. New York: Springer-Verlag, 1973

[12]  李忠. 复分析导引. 北京: 北京大学出版社, 2004