deletions | additions       diff --git a/introduction_1.tex b/introduction_1.tex  index 3268e83..d0004f4 100644  --- a/introduction_1.tex  +++ b/introduction_1.tex 
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\cite{Uieda_Barbosa_2012}  \cite{10.1190/GEO2012-0122.1}  \cite{Camacho_Montesinos_Vieira_2000}  \cite{Farquharson_2008}