3Connor Alexander G, Chrysanthis Panos K, Labrinidis Alexandros. Key key-value stores for efficiently processing graph data in the cloud//Proceedings of the GDM. Hannover, Germany, 2011:88-93.
4Lordanov Borislav. HyperGraphDB: A generalized graph database//Proceedings of the IWGD. JiuZhai Valley, China, 2010:25-36.
5Eifrem Emil. NOSQL: Scaling to size and scaling to complexity, http://blogs, neotechnology, com/emil/2009/11/ nosql-scaling tosize-and-scaling-to-complexity, html, 2009- 1-15.
6Wu Sai, Jiang Da-Wei, Ooi Beng Chin et al. Efficient B-tree based indexing for cloud data proeessing//Proeeedings of the VLDB. Singapore, 2010: 1207-1218.
7Wang Jin-Bao, Wu Sai, Gao Hong et al. Indexing multi dimensional data in a cloud system//Proceedings of the SIGMOD. Indianapolis, Indiana, USA, 2010: 591-602.
8Tsatsanifos George, Sacharidis Dimitris, Sellis Timos et al. MIDAS: Multi-attribute indexing for distributed architecture systems//Proceedings of the SSTD. Minneapolis, MN, USA, 2011:168-185.
9Aguilera M K, Golab W, Shah M A. A practical scalable distributed B-tree//Proceedings of the VLDB. Auckland, New Zealand, 2008: 598-609.
10Zhang Xiang-Yu, Ai Jing, Wang Zhong-Yuan, Lu Jia-Heng et al. An efficient multi-dimensional index for cloud data management//Proceedings of the CloudDB. Hong Kong, China, 2009:17-24.
