\documentstyle[11pt]{article}
             \textheight=660pt 
             \textwidth=15cm
             \topmargin=-27pt 
             \oddsidemargin=0.7cm
             \evensidemargin=0.7cm
             \marginparwidth=60pt
             \title{TheTitle} 
             \author{J.Ph. Chancelier\thanks{Cergrene. Ecole Nationale des Ponts et Chauss\'ees, La Courtine  93167 Noisy le Grand C\'{e}dex }}
	
\begin{document}\maketitle
\def\LL(#1){ {d\over dt}  \left({\partial {\cal L} \over
\dot{#1}}\right) - {\partial {\cal L} \over #1 }}
\input wheel.tex 
\dessin{wheel}{wheel}

 \input systeme.tex
\end{document}