A variable dimension algorithm with the Dantzig-Wolfe decomposition for structured stationary point problems. - Yang Dai; Kazuyuki Sekitani; Yoshitsugu Yamamoto (ZOR Methods Model. Oper. Res., 1992)

A recursive algorithm for finding the minimum norm point in a polytope and a pair of closest points in two polytopes. - Kazuyuki Sekitani; Yoshitsugu Yamamoto (Math. Program., 1993)

Returns to scale in dynamic DEA. - Toshiyuki Sueyoshi; Kazuyuki Sekitani (Eur. J. Oper. Res., 2005)

Measurement of returns to scale using a non-radial DEA model: A range-adjusted measure approach. - Toshiyuki Sueyoshi; Kazuyuki Sekitani (Eur. J. Oper. Res., 2007)

Computational strategy for Russell measure in DEA: Second-order cone programming. - Toshiyuki Sueyoshi; Kazuyuki Sekitani (Eur. J. Oper. Res., 2007)

The measurement of returns to scale under a simultaneous occurrence of multiple solutions in a reference set and a supporting hyperplane. - Toshiyuki Sueyoshi; Kazuyuki Sekitani (Eur. J. Oper. Res., 2007)

DEA congestion and returns to scale under an occurrence of multiple optimal projections. - Toshiyuki Sueyoshi; Kazuyuki Sekitani (Eur. J. Oper. Res., 2009)

An occurrence of multiple projections in DEA-based measurement of technical efficiency: Theoretical comparison among DEA models from desirable properties. - Toshiyuki Sueyoshi; Kazuyuki Sekitani (Eur. J. Oper. Res., 2009)

Decomposing the efficient frontier of the DEA production possibility set into a smallest number of convex polyhedrons by mixed integer programming. - Hirofumi Fukuyama; Kazuyuki Sekitani (Eur. J. Oper. Res., 2012)

Input-output substitutability and strongly monotonic p-norm least distance DEA measures. - Hirofumi Fukuyama; Yasunobu Maeda; Kazuyuki Sekitani; Jianming Shi (Eur. J. Oper. Res., 2014)

Efficiency measurement with a non-convex free disposal hull technology. - Hirofumi Fukuyama; Jens Leth Hougaard; Kazuyuki Sekitani; Jianming Shi (J. Oper. Res. Soc., 2016)

Monotonicity of minimum distance inefficiency measures for Data Envelopment Analysis. - Kazutoshi Ando; Masato Minamide; Kazuyuki Sekitani; Jianming Shi (Eur. J. Oper. Res., 2017)

Performance benchmarking of achievements in the Olympics: An application of Data Envelopment Analysis with restricted multipliers. - Kazuyuki Sekitani; Yu Zhao (Eur. J. Oper. Res., 2021)

Least-distance approach for efficiency analysis: A framework for nonlinear DEA models. - Kazuyuki Sekitani; Yu Zhao (Eur. J. Oper. Res., 2023)