%0 Journal Article %A M. Bonk %A A. Eremenko %T Covering properties of meromorphic functions, negative curvature and spherical geometry %J Annals of mathematics %D 2000 %V 152 %N 2 %U http://geodesic.mathdoc.fr/articles/10.2307/2661392/ %R 10.2307/2661392 %F 10_2307_2661392