supplemental.tex

\section{Introduction}

BBB! \refig{fig:ip-supplement} \cite{Asai2016}

\begin{figure}[tb]
 \includegraphics[width=\linewidth]{img/static/ip.png}
 \caption{This is Invasion Percolation}
 \label{fig:ip-supplement}
\end{figure}

\subsection{If you need a single-column supplement}

Try this:

\begin{verbatim}
\onecolumn
\makeatletter
\@maketitle
\makeatother

\begin{landscape}
aaa
\end{landscape}
\end{verbatim}