I. Hodaka

Passivity Theorem on Pseudo-Strictly Positive Real Condition

Masayuki Suzuki, I. Hodaka, 1996 .

Loopshaping by quadratic constraints on open-loop transfer functions

Masayuki Suzuki, Noboru Sakamoto, Ichijyo Hodaka, 1999 .

New results for strict positive realness and feedback stability

Noboru Sakamoto, Masayuki Suzuki, Ichijyo Hodaka, 2000, IEEE Trans. Autom. Control..