diff --git a/computer_architecture/README.md b/computer_architecture/README.md
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+# Computer Architecture
+
+* [Piranha: A Scalable Architecture Based on Single-Chip Multiprocessing](http://barroso.org/publications/isca00.pdf)
diff --git a/distributed_systems/README.md b/distributed_systems/README.md
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 * [MillWheel: Fault-Tolerant Stream Processing at Internet Scale](http://static.googleusercontent.com/media/research.google.com/en/us/pubs/archive/41378.pdf)
 
-* [Omega: flexible, scalable schedulers for large compute clusters](http://research.google.com/pubs/archive/41684.pdf) 
+* [Omega: flexible, scalable schedulers for large compute clusters](http://research.google.com/pubs/archive/41684.pdf)
 
 * [Optimistic replication](http://pages.cs.wisc.edu/~remzi/Classes/739/Spring2004/Papers/optimistic-survey.pdf)
 
@@ -70,6 +70,8 @@
 
 * [The Byzantine Generals Problem](http://www.andrew.cmu.edu/course/15-749/READINGS/required/resilience/lamport82.pdf)
 
+* :scroll: [The Chubby Lock Service for Loosely-Coupled Distributed Systems](http://static.googleusercontent.com/media/research.google.com/en/us/archive/chubby-osdi06.pdf)
+
 * [The Dangers of Replication and a Solution](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.21.2707&rep=rep1&type=pdf)
 
 * [The Part-Time Parliament](http://research.microsoft.com/en-us/um/people/lamport/pubs/lamport-paxos.pdf)
@@ -94,4 +96,4 @@
 
 ### [“On the Electrodynamics of Moving Bodies” (1905) — Einstein](../historical/physics/on-the-electrodynamics-of-moving-bodies.pdf)
 
-By solving the [asymmetries](http://en.wikipedia.org/wiki/Moving_magnet_and_conductor_problem) that arise in Maxwell’s equations, Einstein’s 1905 paper set the stage for current distributed systems work by demonstrating that there is no absolute frame of reference and by providing an upper bound on the speed of communication. 
+By solving the [asymmetries](http://en.wikipedia.org/wiki/Moving_magnet_and_conductor_problem) that arise in Maxwell’s equations, Einstein’s 1905 paper set the stage for current distributed systems work by demonstrating that there is no absolute frame of reference and by providing an upper bound on the speed of communication.
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