@article{MZ_1928__28_168025,
     author = {J., Schauder},
     title = {Eine {Eigenschaft} des {Haarschen} {Orthogonalsystems}},
     journal = {Mathematische Zeitschrift},
     pages = {317--320},
     publisher = {mathdoc},
     volume = {28},
     year = {1928},
     zbl = {54.0324.02},
     url = {http://geodesic.mathdoc.fr/item/MZ_1928__28_168025/}
}