\begin{table}%t1
  \caption{\label{tab1}Upward expansion of bright areas.}
%\centering
\par
    \begin{tabular}{l c l}
    \hline\hline
{\rm Height\ [Mm]}	& \rm{Diameter\ [Mm] }	& \rm{Reference}		\\
\hline
0		& 0.2			& \rm{ Sivaraman\ et\ al.\ (\cite{Sivaraman1990})}		\\
0.5		&	1		& \rm{ Foing\ \&\ Bonnet\ (\cite{Foing1984})}			\\
1		&	2		& \rm{ Cram\  \&\ Dam\'e\ (\cite{Cram1983})}			\\
2		&	5		& \rm{ Carlsson\ et\ al.\ (\cite{Carlsson1997a})}   \\
\hline
  \end{tabular}
\end{table}