Mangkoesoebroto, S. P., M. H. Prayoga, and R. Parithusta. “Collapse Risks of Fail-Safe RC Frames Due to Earthquakes: Fragility Assessments”. Journal of Engineering and Technological Sciences, vol. 51, no. 4, Aug. 2019, pp. 479-00, doi:10.5614/j.eng.technol.sci.2019.51.4.3.