A. J. van der Schaft

Realizations of higher-order nonlinear differential equations

A. J. van der Schaft, 1986, 1986 25th IEEE Conference on Decision and Control.

Relations between (H/sub infinity /) optimal control of a nonlinear system and its linearization

A. J. van der Schaft, 1991, [1991] Proceedings of the 30th IEEE Conference on Decision and Control.

On symmetries in optimal control

A. J. van der Schaft, A. Van Der Schaft, A. J. van der Schaft, 1986, 1986 25th IEEE Conference on Decision and Control.