@article{IM_1994__115_1_144174,
     author = {Kazuo. Akutagawa and S. Nishikawa},
     title = {Harmonic maps between unbounded convex polyhedra in hyperbolic spaces.},
     journal = {Inventiones mathematicae},
     pages = {391--404},
     publisher = {mathdoc},
     volume = {115},
     number = {1},
     year = {1994},
     zbl = {0812.58017},
     url = {http://geodesic.mathdoc.fr/item/IM_1994__115_1_144174/}
}