Syahwir, Irawati Dewi, Agus Samsi, Vera Firmansyah, Prasetyo Wibowo Yunanto, Renanda Maheswara, and Navieda Putri Anggraeni. “INTERNET OF THINGS OF ELECTRONIC SEAL BASE ON GPRS SHORT MESSAGE SERVICE AND THINGSPEAK”. Spektra: Jurnal Fisika dan Aplikasinya 4, no. 3 (December 30, 2019): 125–132. Accessed November 22, 2024. https://journal.unj.ac.id/unj/index.php/spektra/article/view/11896.