Tommy Kuncara, Arman Syah Putra, Nurul Aisyah, VH. Valentino. Effectiveness of the E-Ticket System Using QR Codes For Smart Transportation Systems. IJSTM [Internet]. 2021 May 26 [cited 2026 Mar. 24];2(3):900-7. Available from: https://ijstm.inarah.co.id/index.php/ijstm/article/view/236