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@@ -13,6 +13,9 @@ Read things here before you start.
 - [An Introduction to Distributed Systems](https://github.com/aphyr/distsys-class) @aphyr's excellent introduction to distributed systems 
 
 ## Books
+- [Distributed Computing, By Hagit Attiya and Jennifer Welch](http://hagit.net.technion.ac.il/publications/dc/)
+- [Impossibility Results for Distributed Computing](http://www.morganclaypool.com/doi/abs/10.2200/S00551ED1V01Y201311DCT012)
+- [Distributed Algorithms, Nancy Lynch](https://www.amazon.com/Distributed-Algorithms-Kaufmann-Management-Systems/dp/1558603484)
 - [Distributed Systems for fun and profit](http://book.mixu.net/distsys/single-page.html) [Free]
 - [Distributed Systems Principles and Paradigms, Andrew Tanenbaum](http://www.amazon.com/Distributed-Systems-Principles-Paradigms-2nd/dp/0132392275) [Amazon Link]
 - [Scalable Web Architecture and Distributed Systems](http://www.aosabook.org/en/distsys.html) [Free]
@@ -36,7 +39,9 @@ Must read papers on distributed systems. While nearly *all* of Lamport's work sh
 - [The Log: What every software engineer should know about real-time data's unifying abstraction](http://engineering.linkedin.com/distributed-systems/log-what-every-software-engineer-should-know-about-real-time-datas-unifying), a somewhat long read, but covers brilliantly on logs, which are at the heart of most distributed systems
 - [Kafka: a Distributed Messaging System for Log Processing](http://notes.stephenholiday.com/Kafka.pdf)
 
-### Distributed Consensus
+### Distributed Consensus and Fault-Tolerance
+- [Practicle Byzantine Fault Tolerance](http://pmg.csail.mit.edu/papers/osdi99.pdf)
+- [The Byzantine Generals Problem](http://bnrg.cs.berkeley.edu/~adj/cs16x/hand-outs/Original_Byzantine.pdf)
 - [The Part Time Parliament](http://research.microsoft.com/en-us/um/people/lamport/pubs/lamport-paxos.pdf) Paxos, Lamport's original Paxos paper, a bit difficult to understand, may require multiple passes
 - [Paxos Made Simple](http://research.microsoft.com/en-us/um/people/lamport/pubs/paxos-simple.pdf), a more terse readable Paxos paper by Lamport himself. Shorter and more easier compared to the original.
 - [The Chubby Lock Service for loosely coupled distributed systems](http://static.googleusercontent.com/media/research.google.com/en//archive/chubby-osdi06.pdf) Google's lock service used for loosely coupled distributed systems. Sort of Paxos as a Service for building other distributed systems. Primary inspiration behind other Service Discovery & Coordination tools like Zookeeper, etcd, Consul etc.