@article{IM_1971__13_142089,
     author = {R. Gulliver and J. Spruck},
     title = {The {Plateau} {Problem} for {Surfaces} of {Prescribed} {Mean} {Curvature} in a {Cylinder.}},
     journal = {Inventiones mathematicae},
     pages = {169--178},
     publisher = {mathdoc},
     volume = {13},
     year = {1971},
     zbl = {0214.11103},
     url = {http://geodesic.mathdoc.fr/item/IM_1971__13_142089/}
}