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*{{citation|last=Maskit|first=Bernard|authorlink=Bernard Maskit|title=On Poincaré's theorem for fundamental polygons|journal=Advances in Math.|volume= 7 |pages=219–230|year=1971}}
*{{citation|last=Nehari|first=Zeev|authorlink=Zeev Nehari|title= Conformal mapping|publisher=Dover Publications|year= 1975}}
*{{citation|last=Siegel| first=C. L.|authorlink=Carl Ludwig Siegel|title=Topics in complex function theory, Vol. II. Automorphic functions and abelian integrals|translator1=A. Shenitzer|translator2= M. Tretkoff|publisher=Wiley-Interscience|year=1971|isbn=0-471-60843-2}}
*{{citation|last=Thurston|first=William P.|authorlink=William Thurston|title=Three-dimensional geometry and topology. Vol. 1.|editor= Silvio Levy|series= Princeton Mathematical Series|volume=35|publisher=[[Princeton University Press]] |year=1997|isbn= 0-691-08304-5}}
*{{citation|last=Wolf|first=Joseph A.|authorlink=Joseph A. Wolf|title=Spaces of constant curvature|edition=Sixth|publisher= AMS Chelsea Publishing|year=2011|isbn= 978-0-8218-5282-8}}
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