Kristen Grauman Margrit Betke J. Lombardi James Gips Gary R. Bradski Communication via eye blinks and eyebrow raises: video-based human-computer interfaces. 359-373 2003 2 Universal Access in the Information Society 4 http://dx.doi.org/10.1007/s10209-003-0062-x db/journals/uais/uais2.html#GraumanBLGB03