@article{MAN_1899__51_157907,
     author = {G. Scorza},
     title = {Sopra le figure polari delle curve piane del 3{\textdegree} ordine},
     journal = {Mathematische Annalen},
     pages = {154--157},
     publisher = {mathdoc},
     volume = {51},
     year = {1899},
     zbl = {29.0468.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1899__51_157907/}
}