Nasution, Torkis. “Sistem Verifikasi Tanda Tangan Digital Menggunakan Metoda Principal Component Analysis”. SATIN - Sains dan Teknologi Informasi 3, no. 1 (July 31, 2018): 40-50. Accessed November 24, 2024. https://jurnal.usti.ac.id/index.php/satin/article/view/352.