Third-party approach to controlling digital copiers. - Yasuhiro Fujii; Ryu Ebisawa; Yumiko Togashi; Takaaki Yamada; Yoshinori Honda; Seiichi Susaki (iiWAS, 2008)

Reducing Amount of Information Loss in k-Anonymization for Secondary Use of Collected Personal Information. - Kunihiko Harada; Yoshinori Sato; Yumiko Togashi (SRII Global Conference, 2012)