@article{MAN_1951__124_160263,
     author = {K. Sch\"utte},
     title = {Beweistheoretische {Untersuchung} der verzweigten {Analysis.}},
     journal = {Mathematische Annalen},
     pages = {123--147},
     publisher = {mathdoc},
     volume = {124},
     year = {1951},
     zbl = {0046.00603},
     url = {http://geodesic.mathdoc.fr/item/MAN_1951__124_160263/}
}