@article{MZ_1957__68_169710,
     author = {Alexander Dinghas},
     title = {Zur {Einzigkeitsfrage} der {Minkowski-Lusternikschen} {Ungleichung} f\"ur die {Relativoberfl\"ache.}},
     journal = {Mathematische Zeitschrift},
     pages = {299--315},
     publisher = {mathdoc},
     volume = {68},
     year = {1957},
     zbl = {0123.15602},
     url = {http://geodesic.mathdoc.fr/item/MZ_1957__68_169710/}
}