J. Poornima, J.Vishnupriyan, G. Keerthi Vijayadhasan, M. Ettappan. “Voice Assisted Smart Vision Stick for Visually Impaired”. International Journal of Control and Automation 13, no. 02 (April 18, 2020): 512 - 519. Accessed September 26, 2021. https://sersc.org/journals/index.php/IJCA/article/view/10180.