Kalehe Lokuge, K. I., G. Gayamini, and B. Hettige. “A Review on Vision-Based Obstacle Avoidance and Assistant Systems for Visually Impaired People”. International Journal of Research in Computing, vol. 1, no. 2, July 2022, pp. 15-22, https://ijrcom.org/index.php/ijrc/article/view/79.