Comparing the Difficulty of Tasks Using Eye Tracking Combined with Subjective and Behavioural Criteria. Journal of Eye Movement Research, Bern, v. 9, n. 3, 2016. DOI: 10.16910/jemr.9.3.3. Disponível em: https://bop.unibe.ch/JEMR/article/view/2528. Acesso em: 4 apr. 2025.