G.Theivanathan, A.Mohamed Sikkander, N.Hemavathy, Murukesh, and Sangeeta R. Mishra. “Tactile System for Visually Impaired People Using Embedded Technology”. International Journal of Scientific Research and Innovative Studies, vol. 1, no. 1, July 2022, pp. 14-19, https://ijsrisjournal.com/index.php/ojsfiles/article/view/17.