@misc{BUMI_1934_1_13_2_a10,
     title = {Corrispondenza},
     journal = {Bollettino della Unione matematica italiana},
     pages = {131--133},
     publisher = {mathdoc},
     volume = {Ser. 1, 13},
     number = {2},
     year = {1934},
     zbl = {60.1322.01},
     language = {it},
     url = {http://geodesic.mathdoc.fr/item/BUMI_1934_1_13_2_a10/}
}