Lorien A, Wellem T. Implementasi Sistem Otentikasi Dokumen Berbasis Quick Response (QR) Code dan Digital Signature. J. RESTI (Rekayasa Sist. Teknol. Inf.) [Internet]. 2021Aug.20 [cited 2025May9];5(4):663 -71. Available from: http://www.jurnal.iaii.or.id/index.php/RESTI/article/view/3316