@article{VLDB-2014-QiXSW13,
	author        = "Zichao Qi and Yanghua Xiao and Bin Shao and Haixun Wang",
	ee            = "http://www.vldb.org/pvldb/vol7/p61-xiao.pdf",
	journal       = "{Proceedings of the VLDB Endowment}",
	number        = 1,
	pages         = "61--72",
	title         = "{Toward a Distance Oracle for Billion-Node Graphs}",
	volume        = 7,
	year          = 2013,
}