RFID Tags Without Customers ID in Book Library for Detecting Latent Interest of User Group. - Yukio Ohsawa; Takuma Hosoda; Takeshi Ui; Misato Ueda; Hirofumi Tanaka (KES (2), 2007)

Visualizing RFID-tag data for detecting latent interest of customers. - Yukio Ohsawa; Hikaru Kimura; Takeshi Ui (SMC, 2008)