A wide-view parallax-free eye-mark recorder with a hyperboloidal half-silvered mirror. - Erika Sumiya; Tomohiro Mashita; Kiyoshi Kiyokawa; Haruo Takemura (VRST, 2009)

A Wide-View Parallax-Free Eye-Mark Recorder with a Hyperboloidal Half-Silvered Mirror and Appearance-Based Gaze Estimation. - Hiroki Mori; Erika Sumiya; Tomohiro Mashita; Kiyoshi Kiyokawa; Haruo Takemura (IEEE Trans. Vis. Comput. Graph., 2011)