Latex: Putting footnotes in tables

If you just use a \footnote command within a table gives the footnote superscript, but the text just doesn't appear. To overcome this, put the tabular bit of the table inside a minipage environment, as

\begin{table}[htp]
\centering
\begin{minipage}{\textwidth}
\centering
\begin{tabular}{|l|l|l|}
....
\end{tabular}
\end{minipage}
\caption{...}
\end{table}

The footnote text will then appear under a short line just above the caption.

If the table is in a 2-column-per-page document, use {0.5\textwidth}. (from here)

For multiple references to one footnote, \textsuperscript{\ref{footnote}}