A method of parameter identification for linear distributed parameter systems. - Yoshifumi Sunahara; Akira Ohsumi; Masaaki Imamura (Autom., 1976)

On Stochastic Observability and Controllability for Nonlinear Distributed Parameter Systems - Yoshifumi Sunahara; Shin'ichi Aihara (Inf. Control., 1977)

A method for parameter estimation of a class of non-linear distributed systems under noisy observations. - Yoshifumi Sunahara; Shin'ichi Aihara; Fumio Kojima (Autom., 1986)