@article{BUMI_1998_8_1A_1S_a9,
     author = {Mella, Massimiliano},
     title = { Contrazioni estremali e geometria n-dimensionale },
     journal = {Bollettino della Unione matematica italiana},
     pages = {43--46},
     publisher = {mathdoc},
     volume = {Ser. 8, 1A},
     number = {1S},
     year = {1998},
     zbl = {Zbl 0932.14010},
     mrnumber = {1401760},
     language = {it},
     url = {http://geodesic.mathdoc.fr/item/BUMI_1998_8_1A_1S_a9/}
}