Suyono, Suyono, et al. “The Physical Appearance and Depositional Environment of The Upper Damar Formation: Alertness from The Deep Pile Benchmark, Field Test, and Laboratory Data in Elucidating Land Subsidence Potential in Kendal-Semarang, Northern Coast of Central Java”. Indonesian Journal on Geoscience, vol. 12, no. 3, Nov. 2025, pp. 481-03, doi:10.17014/ijog.12.3.481-503.