1. Kirk, D. E.,Optimal Control Theory, Prentice-Hall, Englewood Cliffs, New Jersey, 1970.
2. Athans, M., andFalb, P. L.,Optimal Control: An Introduction to the Theory and Its Applications, McGraw-Hill Book Company, New York, New York, 1966.
3. Athananassiades, M.,Optimal Control for Linear Time-Invariant Plants with Time, Fuel, and Energy Constraints, IEEE Transactions on Applications and Industry, Vol. AI-81, pp. 321?325, 1963.
4. Athans, M.,Minimum Fuel Feedback Control Systems: Second-Order Case, IEEE Transactions on Applications and Industry, Vol. AI-82, pp. 8?17, 1963.
5. Meirovitch, L., Vanlandingham, H. F., andÖz, H.,Control of Spinning Flexible Spacecraft by Modal Synthesis, Acta Astronautica, Vol. 4, pp. 985?1010, 1977.