diff --git a/header.tpl b/header.tpl
index 1062fee..f059212 100644
--- a/header.tpl
+++ b/header.tpl
@@ -86,7 +86,7 @@
       (<a href="author_reverse.html">reverse</a>) <a href="author.html">author</a> <br />
       Feedback: <a href="mailto:phw@nymity.ch">phw@nymity.ch</a> (<a
       href="https://nymity.ch/openpgp_public_key.txt">OpenPGP</a>) <br />
-      Last updated: <a href="https://github.com/NullHypothesis/censorbib/commits/master">2018-11-03</a> <br />
+      Last updated: <a href="https://github.com/NullHypothesis/censorbib/commits/master">2019-01-03</a> <br />
       Onion site: <a href="http://3wcwjjnuvjyazeza.onion">3wcwjjnuvjyazeza.onion</a> <br />
       Code: <a href="https://github.com/NullHypothesis/censorbib">GitHub</a>
     </div>
diff --git a/references.bib b/references.bib
index eb1d3c2..a9cc190 100644
--- a/references.bib
+++ b/references.bib
@@ -1,3 +1,21 @@
+@inproceedings{Nasr2019a,
+	author = {Milad Nasr and Sadegh Farhang and Amir Houmansadr and Jens Grossklags},
+	title = {Enemy At the Gateways: Censorship-Resilient Proxy Distribution Using Game Theory},
+	booktitle = {Network and Distributed System Security},
+	publisher = {The Internet Society},
+	year = {2019},
+	url = {https://people.cs.umass.edu/~amir/papers/TorGame.pdf},
+}
+
+@inproceedings{Frolov2019a,
+	author = {Sergey Frolov and Eric Wustrow},
+	title = {The use of {TLS} in Censorship Circumvention},
+	booktitle = {Network and Distributed System Security},
+	publisher = {The Internet Society},
+	year = {2019},
+	url = {https://tlsfingerprint.io/static/frolov2019.pdf},
+}
+
 @inproceedings{Deng2017a,
 	author = {Ziye Deng and Zihan Liu and Zhouguo Chen and Yubin Guo},
 	title = {The Random Forest based Detection of Shadowsock's Traffic},