@article{BUMI_1956_3_11_1_a4,
     author = {Utz, W. R.},
     title = {Su una nota di {De} {Castro.}},
     journal = {Bollettino della Unione matematica italiana},
     pages = {28--30},
     publisher = {mathdoc},
     volume = {Ser. 3, 11},
     number = {1},
     year = {1956},
     zbl = {0071.08505},
     mrnumber = {78527},
     language = {it},
     url = {http://geodesic.mathdoc.fr/item/BUMI_1956_3_11_1_a4/}
}