Security Evaluation of Biometrics Authentications for Cellular Phones. - Hirokazu Manabe; Yuta Yamakawa; Tomohiro Sasamoto; Ryôichi Sasaki (IIH-MSP, 2009)

Understanding User Behavior through Summarization of Window Transition Logs. - Ryohei Saito; Tetsuji Kuboyama; Yuta Yamakawa; Hiroshi Yasuda (DNIS, 2011)