Szubielska, Magdalena, and Bogusław Marek. “The Role of Visual Experience in Mental Majorization and Minorization. Report on a Study on Blind Learners”. Acta Universitatis Lodziensis. Folia Psychologica, no. 19, Jan. 2015, pp. 79-88, doi:10.18778/1427-969X.19.04.