Eunice Njeri Mwangi Emilia I. Barakova Marta Díaz Andreu Català Mallofré Matthias Rauterberg Who is a Better Tutor?: Gaze Hints with a Human or Humanoid Tutor in Game Play. 219-220 2017 HRI (Companion) https://doi.org/10.1145/3029798.3038331 conf/hri/2017c db/conf/hri/hri2017c.html#MwangiBDMR17