Agić, A., Mandić, L., & Gabrijelčič Tomc, H. (2018). An innovative Braille alphabet teaching tool for visually impaired individuals based on advanced tactile embossed 3D graphics. Acta Graphica, 29(1), 7 - 14. Retrieved from http://actagraphica.hr/index.php/actagraphica/article/view/144