@article{Viola1983,
  author    = {{Carlo Viola}},
  title     = {{Un Problema di Aritmetica (A problem of arithmetic)}},
  journal   = {{Archimede}},
  year      = {{1983}},
  volume    = {{35}},
  pages     = {{37--39}},
  note      = {{MR 85j:11024}},
}