Badirun, S., D. Susetyo, and R. Juniah. “Technical Feseability Study and Economic Development of Limestone at Pelawi Hill by PT. Semen Baturaja (Tbk.) in Ogan Komering Ulu Distric of South Sumatra”. Indonesian Journal of Environmental Management and Sustainability, vol. 2, no. 1, Mar. 2018, pp. 24-29, doi:10.26554/ijems.2018.2.1.24-29.