Mikułowski, Dariusz, and Jakub Mańkowski. “An Approach of Explaining Math Function Graphs through the Sound Representation for Blind Students”. Studia Informatica. System and Information Technology, vol. 22, no. 1-2, Apr. 2019, pp. 21-30, https://czasopisma.uws.edu.pl/studiainformatica/article/view/18.