@article{MZ_1927__26_167910,
     author = {J. v. v. Neumann},
     title = {Zur {Hilbertschen} {Beweistheorie}},
     journal = {Mathematische Zeitschrift},
     pages = {1--46},
     publisher = {mathdoc},
     volume = {26},
     year = {1927},
     zbl = {53.0041.02},
     url = {http://geodesic.mathdoc.fr/item/MZ_1927__26_167910/}
}