@article{MAN_1924__91_159040,
     author = {F. Sibirani},
     title = {Sopra un teorema di {R.} {Sturm}},
     journal = {Mathematische Annalen},
     pages = {119--124},
     publisher = {mathdoc},
     volume = {91},
     year = {1924},
     language = {it},
     url = {http://geodesic.mathdoc.fr/item/MAN_1924__91_159040/}
}