--- a/master_paper.bib	Wed Feb 13 19:02:13 2013 +0900
+++ b/master_paper.bib	Wed Feb 20 20:09:12 2013 +0900
@@ -22,11 +22,26 @@
 	year = 2011
 }
 
+@article{cassandra,
+	author = "Avinash Lakshman and Prashant Malik.",
+	title = "Cassandra - a decentralized structured storage system",
+  journal = "LADIS",
+  year = "2003",
+  month = "Mar"
+}
+
 @article{bigtable,
 	author = "Fay Changand Jeffrey Dean and Sanjay Ghemawat and Wilson C. Hsieh and Deborah A. Wallach and Mike Burrows and Tushar Chandra and Andrew Fikes and Robert E. Gruber",
 	title = "Bigtable : A Distributed Storege System for Structured Data"
 }
 
+@article{cap,
+	author = "Nancy Lynch and Seth Gilbert",
+	title = "Brewer's conjecture and the feasibility of consistent, available, partition-tolerant web services",
+  journal = "ACM SIGACT News",
+  year = "2002"
+}
+
 @article{dynamo,
 	author = "Giuseppe DeCandia and Deniz Hastorun and Madan Jampani and Gunavardhan Kakulapati and Avinash Lakshman and Alex Pilchin and Swaminathan Sivasubramanian and Peter Vosshall and Werner Vogels",
 	title = "Dynamo: Amazon's Highly Avaliable Key-value Store"