@article{MAN_1930__103_159427,
     author = {G. K\"othe},
     title = {\"Uber maximale nilpotente {Unterringe} und {Nilringe}},
     journal = {Mathematische Annalen},
     pages = {359--363},
     publisher = {mathdoc},
     volume = {103},
     year = {1930},
     zbl = {56.0867.03},
     url = {http://geodesic.mathdoc.fr/item/MAN_1930__103_159427/}
}