@article{MAN_1910__69_158480,
     author = {A.R. Schweitzer},
     title = {On the {Genesis} of the {Middle} {Product} in {Grassmann's} {Extensive} {Algebra}},
     journal = {Mathematische Annalen},
     pages = {580--585},
     publisher = {mathdoc},
     volume = {69},
     year = {1910},
     zbl = {41.0140.04},
     url = {http://geodesic.mathdoc.fr/item/MAN_1910__69_158480/}
}