\begin{table}%t3
\caption{\label{percentuali}Asteroidal and cometary percentages contributing to the
flux given by \citet{derm3} and \citet{wie}.}
\par
%\centerline
{\small 
\begin{tabular}{ccc}
\hline
\hline
   Source &  Asteroidal contribution & Cometary contribution  \\
\hline
 Dermott et~al. (2002) & 66\%   & 34\% \\
 Wiegert et~al. (2009) &  4\% & 96\% \\
\hline
\end{tabular}}
 \tablebib{(1) \citet{derm3}; (2) \citet{wie}.}
\end{table}