SUSANTO, M. F. Studi Pengembangan Sinyal DTMF Custom Digunakan Untuk Sinyal Watermarking. Prosiding - Seminar Nasional Teknik Elektro UIN Sunan Gunung Djati Bandung, [S. l.], p. 287–298, 2020. Disponível em: https://senter.ee.uinsgd.ac.id/repositori/index.php/prosiding/article/view/senter2019p32. Acesso em: 28 jan. 2022.