Nelsen Septa Henidar, Achmad Fauzan, Ridho Muktiadi, Lahan Adi Purwanto Wijaya, and Tresna Yudha Prawira, “Securing Access to Academic Information Systems with WhatsApp-Based OTP: Implementation at Senior High School”, J. ICT des. eng. technol. sci., vol. 8, no. 1, pp. 30–36, Jun. 2024.