deletions | additions       diff --git a/Introduction.tex b/Introduction.tex  index ed51711..66b9403 100644  --- a/Introduction.tex  +++ b/Introduction.tex 
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\cite{MacGregor_2011}  \cite{Mathis_2010}  \cite{Mathis_2012}  \cite{Rogers_2010a}  \cite{Rogers_2010}  \cite{Rogers_2011}  \end{itemize}