@article{CMH_1994__69_4_140346,
     author = {Yi Fang},
     title = {On minimal annuli in a slab.},
     journal = {Commentarii mathematici Helvetici},
     pages = {417--430},
     publisher = {mathdoc},
     volume = {69},
     number = {4},
     year = {1994},
     zbl = {0819.53006},
     url = {http://geodesic.mathdoc.fr/item/CMH_1994__69_4_140346/}
}