@misc{BUMI_1929_1_8_3_a8,
     title = {Corrispondenza},
     journal = {Bollettino della Unione matematica italiana},
     pages = {164--165},
     publisher = {mathdoc},
     volume = {Ser. 1, 8},
     number = {3},
     year = {1929},
     zbl = {55.0138.03},
     language = {it},
     url = {http://geodesic.mathdoc.fr/item/BUMI_1929_1_8_3_a8/}
}