@article{GDZPPN002366401, title = {\"Uber nin\"are trilineare Formen}, journal = {Mathematische Zeitschrift}, volume = {14}, year = {1922}, pages = {18-35}, zbl = {48.0104.03}, url = {http://dml.mathdoc.fr/item/GDZPPN002366401} }
Schwartz, E. Über ninäre trilineare Formen. Mathematische Zeitschrift, Tome 14 (1922) pp. 18-35. http://gdmltest.u-ga.fr/item/GDZPPN002366401/