@article{MAN_1887__30_157307,
     author = {Study},
     title = {Ueber tern\"are lineare {Formen.}},
     journal = {Mathematische Annalen},
     pages = {120--126},
     year = {1887},
     volume = {30},
     zbl = {19.0129.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1887__30_157307/}
}