A distortion theorem for bounded univalent functions.
A new characterization of Gromov hyperbolicity for negatively curved surfaces.
In this paper we show that to check Gromov hyperbolicity of any surface of constant negative curvature, or Riemann surface, we only need to verify the Rips condition on a very small class of triangles, namely, those obtained by marking three points in a simple closed geodesic. This result is, in fact, a new characterization of Gromov hyperbolicity for Riemann surfaces.
A note on a theorem of Chuaqui and Gevirtz.
A remark on polygonal quasiconformal maps.
Apollonian isometries of regular domains are Möbius mappings.