T. Handayani, “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”, BSED, vol. 42, no. 1, pp. 43–47, Aug. 2021.