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 * [MapReduce: Simplified Data Processing on Large Clusters](http://research.google.com/archive/mapreduce-osdi04.pdf) (Dean and Ghemawat)
 * [The Chubby Lock Service for Loosely Coupled Distributed Systems](http://static.googleusercontent.com/external_content/untrusted_dlcp/research.google.com/en/us/archive/chubby-osdi06.pdf) (Burrows)
-* [Dappar, A Large Scale Distributed Systems Tracing Infrastructure](http://research.google.com/pubs/archive/36356.pdf) (Sigelman et al.)
+* [Dapper, A Large Scale Distributed Systems Tracing Infrastructure](http://research.google.com/pubs/archive/36356.pdf) (Sigelman et al.)
 * [The Google File System](http://research.google.com/archive/gfs-sosp2003.pdf) (Ghemawat et al.)
 * [Spanner: Google’s Globally-Distributed Database](http://research.google.com/archive/spanner-osdi2012.pdf) (Corbett et al.)
 * [Making Reliable Distributed Systems in the Presence of Software Errors](http://www.erlang.org/download/armstrong_thesis_2003.pdf) (Armstrong)