1. 1. A. Varade, N. Gajbhiye, and A. VVPanchbhai, “SMART HELMET USING GSM AND GPS,” 2017.
   2. G. V Vinod and K. Sai Krishna, “IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY SMART HELMET,” Int. J. Eng. Sci. Res. Technol., doi: 10.5281/zenodo.1218547.
   3. I. Nikose, R. Bisen, V. Deshmukh, A. Damahe, and P. Ghotekar, “IJARCCE Review Paper on Smart Helmet using GSM and GPS Technology,” Int. J. Adv. Res. Comput. Commun. Eng. ISO, vol. 3297, no. 2, 2007, doi: 10.17148/IJARCCE.2017.6266.
   4. P. Karthik, B. M. Kumar, K. Suresh, I. M. Sindhu, and C. R. G. Murthy, “Design and implementation of helmet to track the accident zone and recovery using GPS and GSM,” in Proceedings of 2016 International Conference on Advanced Communication Control and Computing Technologies, ICACCCT 2016, 2017, pp. 730–734, doi: 10.1109/ICACCCT.2016.7831736.
   5. A. Topinkatti, D. Yadav, V. S. Kushwaha, and A. Kumari, “Car Accident Detection System Using Gps and Gsm,” Int. J. Eng. Res. Gen. Sci., vol. 3, no. 3, p. 9, 2015.
   6. V. J. Desai, S. P. Nawale, and S. R. Kokane, Design and Implementation of GSM and GPS Based Vehicle Accident Detection System, vol. 1, no. 2. 2014.
   7. M. Syedul Amin, J. Jalil, and M. B. I. Reaz, “Accident detection and reporting system using GPS, GPRS and GSM technology,” in 2012 International Conference on Informatics, Electronics and Vision, ICIEV 2012, 2012, pp. 640–643, doi: 10.1109/ICIEV.2012.6317382.