Dr. V. Seethalakshmi, ASP/ECE, Sabitha K, Sathyalakshmi S, Varshini S. (2020). Indoor Navigation System For Visually Impaired People Using Li-Fi. International Journal of Advanced Science and Technology, 29(9s), 3796 - 3804. Retrieved from http://sersc.org/journals/index.php/IJAST/article/view/16617