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\section{Payam's Papers}    \cite{http://adsabs.harvard.edu/abs/2013PhRvE..87d2722R} and \cite{http://adsabs.harvard.edu/abs/2013PhRvE..87d2723R}    Some questions to investigate:  \begin{enumerate}  \item What happens if an interior piece approaches the pore? \end{enumerate}