O. Kusakabe, M. Kikumoto, K. Shimono, K. Itoh, H. Inagaki, S. Ohsato and K. Watanabe 2017. Development of Gross National Safety Index for Natural Disasters. Geotechnical Engineering Journal of the SEAGS & AGSSEA . 48, 1 (Mar. 2017), 90–101. DOI:https://doi.org/10.14456/seagj.2017.45.