G. S. Darvhankar, A. S. Gharpande, S. D. Bhope, A. S. Meshram, and J. A. Bobade. “STUDY OF 3-Ph UNDERGROUND CABLE FAULT LOCATOR USING ACOUSTIC METHOD”. International Journal of Advance Engineering and Research Development (IJAERD), vol. 2, no. 1, Jan. 2015, pp. 124-8, https://ijaerd.org/index.php/IJAERD/article/view/462.