From e2e0995491d8f3588d6214a2b21351063f17e9e3 Mon Sep 17 00:00:00 2001
From: Jingjing Ren <renjj@ccs.neu.edu>
Date: Thu, 24 Nov 2016 22:28:51 -0500
Subject: mv ref to .bib

---
 _bibliography/big-data.bib | 28 ++++++++++++++++++++++++++++
 chapter/8/big-data.md      |  6 +-----
 2 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/_bibliography/big-data.bib b/_bibliography/big-data.bib
index 524ff43..40ff156 100644
--- a/_bibliography/big-data.bib
+++ b/_bibliography/big-data.bib
@@ -19,3 +19,31 @@
   year={2010},
   organization={ACM}
 }
+
+@online{WinNT,
+  author = {Tarau, Paul},
+  title = {Bulk synchronous model},
+  year = 2014,
+  url = {http://www.cse.unt.edu/~tarau/teaching/parpro/papers/Bulk%20synchronous%20parallel.pdf},
+  urldate = {2016-11-24}
+}
+
+@inproceedings{malewicz2010pregel,
+  title={Pregel: a system for large-scale graph processing},
+  author={Malewicz, Grzegorz and Austern, Matthew H and Bik, Aart JC and Dehnert, James C and Horn, Ilan and Leiser, Naty and Czajkowski, Grzegorz},
+  booktitle={Proceedings of the 2010 ACM SIGMOD International Conference on Management of data},
+  pages={135--146},
+  year={2010},
+  organization={ACM}
+}
+
+@article{ching2015one,
+  title={One trillion edges: graph processing at Facebook-scale},
+  author={Ching, Avery and Edunov, Sergey and Kabiljo, Maja and Logothetis, Dionysios and Muthukrishnan, Sambavi},
+  journal={Proceedings of the VLDB Endowment},
+  volume={8},
+  number={12},
+  pages={1804--1815},
+  year={2015},
+  publisher={VLDB Endowment}
+}
diff --git a/chapter/8/big-data.md b/chapter/8/big-data.md
index 34a14f1..d49d5a1 100644
--- a/chapter/8/big-data.md
+++ b/chapter/8/big-data.md
@@ -14,7 +14,7 @@ This chapter is organized in <label for="note1" class="margin-toggle sidenote-nu
   - FlumeJava {% cite chambers2010flumejava --file big-data %}
   - ...
 - **Graph paralleling**:
-  - Pregel 
+  - Pregel
   - ...
 
 For each programming model, we will discuss the motivation, basic model, execution model, fault-tolerance and performance.
@@ -131,7 +131,3 @@ Apache Giraph is an open source implementation of Pregel in which new features l
 
 ## References
 {% bibliography --file big-data %}
-
-"Bulk synchronous model" http://www.cse.unt.edu/~tarau/teaching/parpro/papers/Bulk%20synchronous%20parallel.pdf.
-"Pregel: A System for Large-Scale Graph Processing." <br />
-"One Trillion Edges: Graph Processing at Facebook-Scale." Accessed November 17, 2016. http://www.vldb.org/pvldb/vol8/p1804-ching.pdf.
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