Eliason, S. B., Kelley, W. G., & Schwarzkopf, A. B. (1978). Optimal control and differential equations: Proceedings of the Conference on Optimal Control and Differential Equations held at the University of Oklahoma, Norman, Oklahoma, March 24-27, 1977. Academic Press.

Eliason, Stanley B., Walter G. Kelley, and Albert B. Schwarzkopf. Optimal Control and Differential Equations: Proceedings of the Conference on Optimal Control and Differential Equations Held at the University of Oklahoma, Norman, Oklahoma, March 24-27, 1977. New York: Academic Press, 1978.

Eliason, Stanley B., et al. Optimal Control and Differential Equations: Proceedings of the Conference on Optimal Control and Differential Equations Held at the University of Oklahoma, Norman, Oklahoma, March 24-27, 1977. Academic Press, 1978.