Sarla Kharwar, Krupa Patel, and Prof. Shyamal Virnodkar. “SMS BASE FILE SEARCH & AUTOMATIC CONTACT SAVING TECHNIQUE USING GSM”. International Journal of Advance Engineering and Research Development (IJAERD), vol. 2, no. 9, Sept. 2015, pp. 148-51, https://ijaerd.org/index.php/IJAERD/article/view/1022.