1. B.D.O. Anderson and J.B. Moore. Linear Optimal Control. Prentice Hall, Englewood Cliffs, New Jersey, 1971.
2. B.D.O. Anderson and J.B. Moore. Optimal Control, Linear Quadratic Methods. Prentice Hall, Englewood Cliffs, New Jersey, 1990.
3. R. Aris. Studies in optimization. II. Optimal temperature gradients in tubular reactors. Chem. Eng. Sci., 13(1):18–29, 1960.
4. R. Aris. The Optimal Design of Chemical Reactors: A Study in Dynamic Programming. Academic Press, New York, 1961.
5. R. Aris, D.F. Rudd, and N.R. Amundson. On optimum cross current extraction. Chem. Eng. Sci., 12:88–97, 1960.