@book{
title = {The problem of cell 13},
author = {Thomson, Graeme},
editor = {Futrelle, Jacques},
editor = {Thomson, Silvia},
editor = {Versione semplificata ad uso scolastico },
editor = {Con apparato didattico },
year = {1999},
address = {Genova },
publisher = {Cideb},
}