@article{BUMI_1963_3_18_2_a6,
     author = {Ciampa, Salvatore},
     title = {Distanze non necessariamente triangolari.},
     journal = {Bollettino della Unione matematica italiana},
     pages = {125--137},
     publisher = {mathdoc},
     volume = {Ser. 3, 18},
     number = {2},
     year = {1963},
     zbl = {0115.16902},
     mrnumber = {154245},
     language = {it},
     url = {http://geodesic.mathdoc.fr/item/BUMI_1963_3_18_2_a6/}
}