@article{MAN_1889__33_157416,
     author = {Gordan},
     title = {Das erweiterte {Formensystem}},
     journal = {Mathematische Annalen},
     pages = {372--389},
     publisher = {mathdoc},
     volume = {33},
     year = {1889},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1889__33_157416/}
}