G. Zheng, X. S. Cheng, Y. Diao and H. X. Wang (2011) “Concept and Design Methodology of Redundancy in Braced Excavation and Case Histories”, Geotechnical Engineering Journal of the SEAGS & AGSSEA . Bangkok, Thailand, 42(3), pp. 13–21. doi: 10.14456/seagj.2011.11.