@article{JRAM_1927__157_149625,
     author = {Hans Hahn},
     title = {\"Uber lineare {Gleichungssysteme} in linearen {R\"aumen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {214--229},
     publisher = {mathdoc},
     volume = {157},
     year = {1927},
     zbl = {53.0369.03},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1927__157_149625/}
}