Add my paper about 1st order solution

resources/index.md

@@ -104,6 +104,10 @@ use the parallel option in Dynare](https://mutschler.eu/dynare/parallel/), by
 Willi Mutscher
 </p>
 
+<p class="indent" markdown="1">
+<i class="fas fa-file-pdf"></i> [Solving rational expectations models at first order: what Dynare does](http://www.dynare.org/wp-repo/dynarewp002.pdf),
+by Sébastien Villemot
+</p>
 
 # <i class="fas fa-book"></i> Dynare implementations of published models