%0 Journal Article %A Kra, Irwin %T Horocyclic coordinates for Riemann surfaces and moduli spaces. I. Teichmüller and Riemann spaces of Kleinian groups %J Journal of the American Mathematical Society %D 1990 %P 499-578 %V 03 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1990-1049503-1/ %R 10.1090/S0894-0347-1990-1049503-1 %F 10_1090_S0894_0347_1990_1049503_1