@article{MZ_1954__60_169436,
     author = {Joachim Nitsche},
     title = {Randwertprobleme f\"ur die {Verbiegung} positiv gekr\"ummter {Fl\"achenst\"ucke.}},
     journal = {Mathematische Zeitschrift},
     pages = {353--366},
     publisher = {mathdoc},
     volume = {60},
     year = {1954},
     zbl = {0055.39703},
     url = {http://geodesic.mathdoc.fr/item/MZ_1954__60_169436/}
}