%0 Journal Article %A Richard Penney %A Roman Urban %T Unbounded harmonic functions on homogeneous manifolds of negative curvature %J Colloquium Mathematicum %D 2002 %P 99-121 %V 91 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm91-1-8/ %R 10.4064/cm91-1-8 %G en %F 10_4064_cm91_1_8