@inproceedings{HIMI-D-2013-KobayashiYA,
	author        = "Takuto Kobayashi and Toshikazu Yamaguchi and Yumi Asahi",
	booktitle     = "{Proceedings of the 15th International Conference on Human Interface and the Management of Information. Part I: Information and Interaction Design}",
	doi           = "10.1007/978-3-642-39209-2_51",
	isbn          = "978-3-642-39208-5",
	pages         = "449--455",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Analysis of Purchasing Behavior Focusing on the Passage of Time at a Group Buying Site of Coupon}",
	volume        = 8016,
	year          = 2013,
}