@article{MAN_1996__304_4_165401,
     author = {Masaaki, Yamada, Kotaro Umehara},
     title = {Surfaces of constant mean curvature c in {H3} (-c2) with prescribed hyperbolic {Gauss} map.},
     journal = {Mathematische Annalen},
     pages = {203--224},
     publisher = {mathdoc},
     volume = {304},
     number = {4},
     year = {1996},
     zbl = {0841.53050},
     url = {http://geodesic.mathdoc.fr/item/MAN_1996__304_4_165401/}
}