LetterTwitter: smart mailbox for spam-filtered notification of received letters. - Koji Tsukada; Yuka Mizushima; Ai Ogata; Itiro Siio (UbiComp (Adjunct Papers), 2010)

Autonomous field mapping and operation with proximity sensing. - Ryo Saegusa; Kazutaka Hara; Yasushi Teshigawara; Yuka Mizushima (SII, 2015)