Noton, A. R. M. (1965). Introduction to variational methods in control engineering ([1st ed.].). Pergamon Press.

Noton, A. R. M. Introduction to Variational Methods in Control Engineering. [1st ed.]. Oxford ; New York: Pergamon Press, 1965.

Noton, A. R. M. Introduction to Variational Methods in Control Engineering. [1st ed.]. Pergamon Press, 1965.