\documentclass[a4paper,twocolumn,10pt]{book}
\usepackage[latin1]{inputenc}
\usepackage[english,italian]{babel}   % usiamo il pacchetto italiano
\usepackage{amsmath}
\usepackage{array}
\usepackage{ipisabib}
\usepackage{xspace}
\usepackage{epsf}
\usepackage{mflogo}
\usepackage{footnpag}
\usepackage{alltt}
\usepackage{times}