@article{MZ_1978__163_172754,
     author = {Klaus Steffen and Henry C. Wente},
     title = {The {Non-Existence} of {Branch} {Points} in {Solutions} to {Certain} {Classes} of {Plateau} {Type} {Variational} {Problems.}},
     journal = {Mathematische Zeitschrift},
     pages = {211--238},
     publisher = {mathdoc},
     volume = {163},
     year = {1978},
     zbl = {0404.49037},
     url = {http://geodesic.mathdoc.fr/item/MZ_1978__163_172754/}
}