C. E. Pangaribuan, Ogy Kevinta Surbakti, Fera Sihotang, Yosafat Tamba, Yordan Daniel Ndruru, and Paskah Marto Hasugian, “Analysis Of The Utilization Of Echo Hiding Algorithm In Hiding Secret Messages”, Login, vol. 18, no. 01, pp. 18-23, Jun. 2024.