@conference {1491,
	title = {Eye Tracking Research and Applications Symposium (ETRA)},
	booktitle = {Advanced gaze visualizations for three-dimensional virtual environments},
	year = {2010},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-77952387290\&partnerID=MN8TOARS},
	author = {Stellmach, S. and Nacke, L. and Dachselt, R.}
}
