M. Rosmaya, W. Wilonotomo, and R. Novan Ripsandi Ohei, “ANALYSIS OF THE IMPLEMENTATION OF PAPERLESS AND E-BILLING SYSTEMS IN THE FIELD OF SERVICE AND VERIFICATION OF TRAVEL DOCUMENTS: ANALISIS IMPLEMENTASI SISTEM PAPERLESS DAN E-BILLING PADA BIDANG PELAYANAN DAN VERIFIKASI DOKUMEN PERJALANAN”, tematics, vol. 3, no. 2, pp. 183–219, May 2021.