@article{MZ_1922__12_167668,
     author = {E. Schwartz},
     title = {\"Uber nin\"are trilineare {Formen}},
     journal = {Mathematische Zeitschrift},
     pages = {18--35},
     publisher = {mathdoc},
     volume = {12},
     year = {1922},
     zbl = {48.0104.03},
     url = {http://geodesic.mathdoc.fr/item/MZ_1922__12_167668/}
}