\begin{figure}[h]
\scriptsize
\centering

\subfigure[XOMO Effort Scoring versus USC Website \cite{expert-cocomoii}]{
\includegraphics[width=3in, bb=0 0 640 480]{figures/verification-xomo-effort-usc-website.png}
\label{fig:verification-xomo-effort-usc-website}
}
\subfigure[XOMO Months Scoring versus USC Website \cite{expert-cocomoii}]{
\includegraphics[width=3in, bb=0 0 640 480]{figures/verification-xomo-months-usc-website.png}
\label{fig:verification-xomo-months-usc-website}
}
\subfigure[XOMO Threats Scoring versus USC Website \cite{expert-cocomoii}]{
\includegraphics[width=3in, bb=0 0 640 480]{figures/verification-xomo-threats-usc-website.png}
\label{fig:verification-xomo-threats-usc-website}
}
\subfigure[XOMO Defects Scoring versus NASA Spread Sheet \cite{nasa-spreadsheet}]{
\includegraphics[width=3in, bb=0 0 640 480]{figures/verification-xomo-defects-nasa-spreadsheet.png}
\label{fig:verification-xomo-defects-nasa-spreadsheet}
}

\caption{MRE Comparison of Scores from NOVA using XOMO model}
\label{fig:verification-xomo-model}
\end{figure}
