Eka Juliafad, Hideomi Gokon, and Rusnardi Rahmat Putra, “DEFECT STUDY ON SINGLE STOREY REINFORCED CONCRETE BUILDING IN WEST SUMATRA: BEFORE AND AFTER 2009 WEST SUMATRA EARTHQUAKE”, INTERNATIONAL JOURNAL OF GEOMATE, vol. 20, no. 77, pp. 205–212, Jan. 2021.