A PL homotopy for finding all the roots of a polynomial. - Masakazu Kojima; Hisakazu Nishino; Naohiko Arima (Math. Program., 1979)

An application of Lemke's method to a class of Markov decision problems. - Nobuo Matsubayashi; Hisakazu Nishino (Eur. J. Oper. Res., 1999)

On measuring the inefficiency with the inner-product norm in data envelopment analysis. - Akiko Takeda; Hisakazu Nishino (Eur. J. Oper. Res., 2001)

Merger effect of two firms under network equilibrium. - Nobuo Matsubayashi; Masashi Umezawa; Yasushi Masuda; Hisakazu Nishino (Eur. J. Oper. Res., 2002)

A cost allocation problem arising in hub-spoke network systems. - Nobuo Matsubayashi; Masashi Umezawa; Yasushi Masuda; Hisakazu Nishino (Eur. J. Oper. Res., 2005)