@inproceedings{inproceedingsa23b14cd,
title   = {Free head motion eye gaze tracking without calibration},
author = {Morimoto, Carlos Hitoshi and Amir, Arnon and Flickner, Myron},
year = {2002},
doi = {10.1145/506443.506496},
publisher = {ACM},
booktitle   = {Conference on Human Factors in Computing Systems - CHI}
}