@article{BUMI_2007_8_10B_3_a3,
     author = {Mikawa, Hiroshi and Peneva, Temenoujka},
     title = {Sums of {Three} {Prime} {Squares}},
     journal = {Bollettino della Unione matematica italiana},
     pages = {549--558},
     publisher = {mathdoc},
     volume = {Ser. 8, 10B},
     number = {3},
     year = {2007},
     zbl = {1177.11086},
     mrnumber = {2351527},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BUMI_2007_8_10B_3_a3/}
}