Mixed H2/H∞ control problem in a behavioral framework. - Takashi Doi; Osamu Kaneko; Takao Fujii (CDC, 2001)

H2 optimal control law and its parameterization in a behavioral framework. - Osamu Kaneko; Takashi Doi; Takao Fujii (CDC, 2001)

A 2-approximation NC algorithm for connected vertex cover and tree cover. - Toshihiro Fujito; Takashi Doi (Inf. Process. Lett., 2004)

A primal-dual method for approximating tree cover with two weights. - Takashi Doi; Toshihiro Fujito (Discret. Optim., 2006)

Performance evaluation of academic-document writing process using software reliability models. - Takashi Doi; Takashi Okuda; Tetsuo Ideguchi; Xuejun Tian (ITHET, 2013)