B. Kharisma, Oktaf, Folkes E. Laumal, Triawan A. Cahyanto, Dwi Ermayanti Susilo, Petrisia W. Sudarmadji, and . . “Study of E-Mail Data Services Based on Delay Tolerant Network in The Riau Province Border Region”. International Journal of Engineering and Technology 7, no. 4.36 (March 2, 2026): 1435–1440. Accessed March 29, 2026. https://www.sciencepubco.com/index.php/IJET/article/view/29002.