\documentclass[10pt]{article}
\usepackage{psfig}

\topmargin=0in
\headheight=0in
\oddsidemargin=0.cm
\evensidemargin=0.cm
\textwidth 6.5in
\textheight 9 in

\renewcommand{\textfraction}{0.05}
\renewcommand{\floatpagefraction}{0.9}
\renewcommand{\topfraction}{.99}
\renewcommand{\bottomfraction}{.75}


% * * *  N O T A T I O N S  * * *

\def\real   {{\rm I\kern-.2em R}} 
\def\espace {\rm I\kern-.2em E} 
\def\FUN    {f}          % function describing a terrain
\def\NODE   {N}          % MT node 
\def\THR    {\tau}       % threshold function
\def\FCS    {{\cal F}}   % focus set
\def\BOUND  {b}          % bound on degree of removable vertices
\def\UPD    {C}          % mesh update
\def\MM     {{\cal M}}   % DAG of the multiresolution model
\def\THR    {\tau}       % threshold function
\def\FCS    {I}          % focus set, qui chiamata region of interest
\def\TD     {{TD}}       % top down
\def\BU     {{BU}}       % bottom up

\def\NOTA #1 {}
\def\psfig #1 {}
\def\citeauthoryear {}

\begin{document}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\input{part1}

\bigskip\bigskip
[!!!!!!!!!!! ENRICO: DA QUI IN POI NON HO ANCORA TOCCATO !!!!!!!!!!!!!!]

\bigskip\bigskip

\input{part2}
\input{refs}

\end{document}
