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diff --git a/README.md b/README.md
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-Rhatto's mutt dotfiles
+Rhatto's mail dotfiles
 ======================
 
+About
+-----
+
 This is the repository for rhatto's mutt configuration.
 More information at https://git.fluxo.info/metadot
+
+References
+----------
+
+* [Delete duplicate emails in mutt - 41J Blog](http://41j.com/blog/2011/09/delete-duplicate-emails-in-mutt/).