diff --git a/operating_systems/README.md b/operating_systems/README.md
index f7f675f..243f202 100644
--- a/operating_systems/README.md
+++ b/operating_systems/README.md
@@ -1,3 +1,5 @@
 * [Xen and the Art of Virtualization](http://www.cl.cam.ac.uk/research/srg/netos/papers/2003-xensosp.pdf)
 
 * [The operating system: should there be one?](http://plosworkshop.org/2013/preprint/kell.pdf)
+
+* [The Scalable Commutativity Rule: Designing Scalable Software for Multicore Processors](http://web.mit.edu/amdragon/www/pubs/commutativity-sosp13.pdf)