@article{MAN_1908__65_158358,
     author = {Philip E.B. Jourdain},
     title = {On the {Multiplication} of {Alephs}},
     journal = {Mathematische Annalen},
     pages = {506--512},
     publisher = {mathdoc},
     volume = {65},
     year = {1908},
     zbl = {39.0101.02},
     url = {http://geodesic.mathdoc.fr/item/MAN_1908__65_158358/}
}