1. Ahmed, N.U.: Elements of Finite-Dimensional Systems and Control Theory. Longman Scientific and Technical, Essex (1988)
2. Ahmed, N.U.: Dynamic Systems and Control with Applications. World Scientific, Singapore (2006)
3. Ahmed, N.U., Teo, K.L.: Optimal Control of Distributed Parameter Systems. Elsevier Science, New York (1981)
4. Anderson, B.D.O., Moore, J.B.: Linear Optimal Control. Prentice-Hall, Englewood Cliffs (1971)
5. Athans, M., Falb, P.L.: Optimal Control. McGraw-Hill, New York (1966)