BAQAI, Attiya; 						JAN, Maria; 						MAHER, Rafay Rasheed.
 Optical Braille Blocks for Visually Impaired Elementary Education.
<strong>Mehran University Research Journal of Engineering and Technology</strong>, [S.l.], v. 40, n. 1, p. 205 - 214, jan. 2021.
ISSN 2413-7219.
Available at: &lt;<a href="https://publications.muet.edu.pk/index.php/muetrj/article/view/2000" target="_new">https://publications.muet.edu.pk/index.php/muetrj/article/view/2000</a>&gt;. Date accessed: 26 apr. 2024.
doi: <a href="http://dx.doi.org/10.22581/muet1982.2101.18">http://dx.doi.org/10.22581/muet1982.2101.18</a>.