REFERENCES
- Lo, Y. T. & Lee, S. W., IEEE Trans, on Antennas and Propagation, AP-14 (1966), 22–30.
- Bellman, R., Dynamic Programming (Princeton University Press, Princeton, New Jersey), 1957.
- Skolnik, M. I., Nemhauser, G. & Sherman, J. W., III, IEEE Trans, on Antennas and Propagation, AP-12 (1964), 35–43.