1. P.W. Blythe. Evolutionary control design: Exploring the time domain. AIAA Journal of Guidance, Control and Dynamics, page (submitted), 1997.
2. H. W. Bode. Relations between attenuation and phase in feedback amplifier design. Bell System Technical Journal, 19: 421–454, 1940.
3. H. Jr. Harris. The analysis and design of servomechanisms. Technical Report Report 454, OSRD NDRC, Jan 1942.
4. A.C. Hall. The Analysis and Synthesis of Linear Servomechanisms. Cambridge, Mass: Technology Press, 1943.
5. H. Nyquist. The regeneration theory. Transactions of the ASME, 76: 1151, 1954.