1. H.T. Banks, W. Fang and R.J. Silcox, Active control of noise: A time domain approach, Proc. Conf. on Recent Advances in Active Control of Sound and Vibration, (VPISU, Blacksburg), April, 1991, pp. S43–S47.
2. H.T. Banks and K. Kunisch, The linear regulator problem for parabolic systems, SIAM J. Control and Opt. 22 (1984), 684–698.
3. H.T. Banks, S.L. Keeling and R.J. Silcox, Optimal control techniques for active noise suppression, Proc. 27th IEEE Conf. on Dec. and Control, Austin, TX, 1988, pp. 2006–2011.
4. H.T. Banks, S.L. Keeling, R.J. Silcox and C. Wang, Linear quadratic tracking problem in Hilbert space: Application to optimal active noise suppression, Proc. 5th IFAC Symp. on Control of DPS (A. El-Jai, M. Amouroux, eds.), Perpignan, France, June, 1989, pp. 17–22.
5. H.T. Banks, G. Propst and R.J. Silcox, A comparison of time domain boundary conditions for acoustic waves in wave guides, ICASE Rep No. 91–27, 1991, NASA Langly Res. Ctr., Hampton, VA..