@article{10_4064_fm_82_4_331_346,
     author = {Urlich Felgner},
     title = {$\ensuremath{\aleph}_1$ - {Kategorische} {Theorien} nicht-kommutativer {Ringe}},
     journal = {Fundamenta Mathematicae},
     pages = {331--346},
     publisher = {mathdoc},
     volume = {82},
     number = {4},
     year = {1974},
     doi = {10.4064/fm-82-4-331-346},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-82-4-331-346/}
}