Do we need eye trackers to tell where people look? - Sune Alstrup Johansen; John Paulin Hansen (CHI Extended Abstracts, 2006)

Low cost vs. high-end eye tracking for usability testing. - Sune Alstrup Johansen; Javier San Agustin; Henrik H. T. Skovsgaard; John Paulin Hansen; Martin Tall (CHI Extended Abstracts, 2011)

Evaluation of a remote webcam-based eye tracker. - Henrik H. T. Skovsgaard; Javier San Agustin; Sune Alstrup Johansen; John Paulin Hansen; Martin Tall (NGCA, 2011)