Wardoyo, M. A. I., & Khotimah, N. (2026). A GIS-BASED ASSESSMENT OF THE SURFACE RUN-OFF VULNERABILITY IN THE BORDER AREA OF ANCIENT VOLCANO IMOGIRI SUB-DISTRICT, YOGYAKARTA, INDONESIA. JURNAL GEOGRAFI Geografi Dan Pengajarannya , 24(1), 403–432. https://doi.org/10.26740/jggp.v24n1.p403-432