Mrs. Mohana Priya, S. Sharon Anisha Angelin, S. Racshini, R. Shanmuga Priya,. “Iot Based Earthquake Warning System”. International Journal of Advanced Science and Technology, Vol. 29, no. 9s, May 2020, pp. 3026 -33, https://sersc.org/journals/index.php/IJAST/article/view/15708.