Mi sembra proprio che il titolo dell amia bibliografia sia più piccolo.
Ecco il mio preambolo
`\documentclass[a4paper,11pt]{article}
\usepackage[latin1]{inputenc}
\usepackage[italian]{babel}
\usepackage[latin1]{inputenc}
\usepackage[italian]{babel}
\usepackage[T1]{fontenc}
\usepackage{indentfirst}
\usepackage{amsfonts,amsmath,amsthm,mathrsfs,pxfonts,enumitem}
\usepackage{setspace}
\usepackage{titlesec}
\title{}
\date{}
\author{}
\let\oldbibliography\thebibliography
\renewcommand{\thebibliography}[1]{%
\footnotesize
\oldbibliography{#1}
\setlength{\itemsep}{10pt}%
}
\newcommand{…}{…}
\DeclareMathOperator{…}{…}
\theoremstyle{…}
\titleformat{\section}[block]
{\normalfont\fillast}
{\scshape § \oldstylenums{\thesection}.}
{1ex minus .1ex}
{}
\titlespacing{\section}
{3pc}{*6}{*2}[3pc]`