@article{BUMI_1930_1_9_5_a9,
     author = {Bortolotti, Enea},
     title = {Connessioni proiettive},
     journal = {Bollettino della Unione matematica italiana},
     pages = {288--294},
     publisher = {mathdoc},
     volume = {Ser. 1, 9},
     number = {5},
     year = {1930},
     zbl = {56.0626.01},
     language = {it},
     url = {https://geodesic-test.mathdoc.fr/item/BUMI_1930_1_9_5_a9/}
}