Susana Zoghbi, Elizabeth A. Croft, Dana Kulic, H. F. Machiel Van der Loos. Evaluation of affective state estimations using an on-line reporting device during human-robot interactions. In 2009 IEEE/RSJ International Conference on Intelligent Robots and Systems, October 11-15, 2009, St. Louis, MO, USA. pages 3742-3749, IEEE, 2009. [doi]