@article{MAN_1893__42_157662,
     author = {R. von Lilienthal},
     title = {Note zur {Hesse'schen} {Normalform} der {Gleichung} einer {Ebene.}},
     journal = {Mathematische Annalen},
     pages = {497},
     publisher = {mathdoc},
     volume = {42},
     year = {1893},
     zbl = {25.1064.03},
     language = {un},
     url = {https://geodesic-test.mathdoc.fr/item/MAN_1893__42_157662/}
}