Imam Riadi, Rusydi Umar, and M. I. Syahib, “Akuisisi Bukti Digital Viber Messenger Android Menggunakan Metode National Institute of Standards and Technology (NIST) ”, J. RESTI (Rekayasa Sist. Teknol. Inf.) , vol. 5, no. 1, pp. 45 - 54, Feb. 2021.