Generalized mean porosity and dimension. Nieminen, Tomi (2006) Annales Academiae Scientiarum Fennicae. Mathematica
Geodesics on Riemann surfaces with ramification points of order greater than two. Sheingorn, Mark (2001) The New York Journal of Mathematics [electronic only]
Gromov hyperbolicity of certain conformal invariant metrics. Lindén, Henri (2007) Annales Academiae Scientiarum Fennicae. Mathematica