1. N. K., S. P. and S. K., Assistive Device for Blind, Deaf and Dumb People using Raspberry-pi, Imperial Journal of Interdisciplinary Research (IJIR), 3(6), 2017 [Online]. Available: https://www.onlinejournal.in/IJIRV3I6/048.pdf.
2. L. González-Delgado, L. Serpa-Andrade, K. Calle-Urgiléz, A. Guzhñay-Lucero, V. Robles-Bykbaev and M. Mena-Salcedo, "A low-cost wearable support system for visually disabled people," 2016 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC), Ixtapa, 2016, pp. 1-5. doi: 10.1109/ROPEC.2016.7830606
3. Anusha Bhargava, Karthik V. Nath, Pritish Sachdeva & Monil Samel (2015), International Journal of Current Engineering and Technology, E-ISSN 2277– 4106, P-ISSN 2347– 5161
4. "AudioMUD: A Multiuser Virtual Environment for Blind People,";Sanchez;IEEE Transactions on Neural Systems and Rehabilitation Engineering,2007
5. “Interactive 3-D sound hyperstories for blind children,”;Lumbreras;Proc. ACM-CHI ‘99, Pittsburgh, PA,1999