@article{MZ_1996__223_3_174916,
     author = {Frank Morgan and Joel Hass},
     title = {Geodesics and soap bubbles in surfaces.},
     journal = {Mathematische Zeitschrift},
     pages = {185--196},
     publisher = {mathdoc},
     volume = {223},
     number = {3},
     year = {1996},
     zbl = {0865.53009},
     url = {http://geodesic.mathdoc.fr/item/MZ_1996__223_3_174916/}
}