\label{fig:md:prec_fc}
\end{figure}
-The radial distribution function $g(r)$ for C-C and Si-Si distances is shown in Fig. \ref{fig:md:pc_si-si_c-c}.
+The radial distribution function $g(r)$ for C-C and Si-Si distances is shown in Fig.~\ref{fig:md:pc_si-si_c-c}.
\begin{figure}[tp]
\begin{center}
\includegraphics[width=0.7\textwidth]{sic_prec_450_si-si_c-c.ps}