@article{MZ_1936__41_168654,
     author = {G. K\"othe},
     title = {Die {Gleichungstheorie} im {Hilbertschen} {Raum}},
     journal = {Mathematische Zeitschrift},
     pages = {153--162},
     publisher = {mathdoc},
     volume = {41},
     year = {1936},
     zbl = {0013.40501},
     url = {http://geodesic.mathdoc.fr/item/MZ_1936__41_168654/}
}