@article{MAN_1953__126_160327,
     author = {F. Klein-Barmen},
     title = {Zur {Theorie} der {Operative} und {Assoziative.}},
     journal = {Mathematische Annalen},
     pages = {23--30},
     publisher = {mathdoc},
     volume = {126},
     year = {1953},
     zbl = {0050.01602},
     url = {http://geodesic.mathdoc.fr/item/MAN_1953__126_160327/}
}