@article{MAN_1984__267_163895,
     author = {U. Pinkall},
     title = {h-konvexe {Kurven} in der hyperbolischen {Ebene.}},
     journal = {Mathematische Annalen},
     pages = {289--298},
     publisher = {mathdoc},
     volume = {267},
     year = {1984},
     zbl = {0529.52005},
     url = {http://geodesic.mathdoc.fr/item/MAN_1984__267_163895/}
}