“Dynamics Responses of a Block Machine Foundation and a Pile Group Foundation Systems on Stratified Residual Soils in Indonesia by Lumped Mass and Finite Element Methods”, J. Eng. Technol. Sci., vol. 56, no. 2, pp. 244–265, Apr. 2024, doi: 10.5614/j.eng.technol.sci.2024.56.2.6.