Kazuyuki Sekitani, Yu Zhao. Least-distance approach for efficiency analysis: A framework for nonlinear DEA models. European Journal of Operational Research. 2022
K Sekitani, Y Zhao. Performance benchmarking of achievements in the Olympics: An application of Data Envelopment Analysis with restricted multipliers. European Journal of Operational Research. 2021. 294. 3. 1202-1212
Fukuyama, H., Leth Hougaard, J., Sekitani, K., Shi, J. Efficiency measurement with a non-convex free disposal. Journal of the Operational Research Societ. 2016. 1. 67. 9-19