Handayani, Tri. “Report on the Geological Field Trip to Mahakam Delta and Balikpapan Bay (August 31st to September 4th, 2018), Organized by FOSI-IAS-SEPM As Part of Regional Seminar: Past & Present Sedimentation in Tropical Region”. Berita Sedimentologi, vol. 42, no. 1, Aug. 2021, pp. 43-47, doi:10.51835/bsed.2019.42.1.76.