O'Dwyer, Aidan and Ringwood, John (2000) Convergence of parameter and delay estimates using open loop time domain gradient methods. Proceedings of the Irish Signals and Systems Conference (ISSC'00). pp. 434-441.

O'Dwyer, Aidan and Ringwood, John (1999) A classification of techniques for the estimation of the model parameters of a time delayed process. In: Proceedings of the Irish Signals and Systems Conference, June 1999, Galway, Ireland.

O'Dwyer, Aidan and Ringwood, John (1999) A classification of techniques for the compensation of time delayed processes. Part 2. Structurally optimised controllers. In: Modern Applied Mathematical Techniques in Circuits, Systems and Control. World Scientific and Engineering Society Press. ISBN 960805205X

O'Dwyer, Aidan and Ringwood, John (1999) A classification of techniques for the compensation of time delayed processes. Part 1. Parameter optimised controllers. In: Modern Applied Mathematical Techniques in Circuits, Systems and Control. World Scientific and Engineering Society Press, pp. 176-186. ISBN 960805205X

Behan, M. and Cahill, M. and Carry, M. and Clausen, G. and Dooley, V. and English, N. and Grainger, W. and O'Connor, David and O'Dwyer, Aidan and Ringwood, John (1997) Closed loop time domain gradient methods for parameter and time delay estimation. In: Proceedings of the I rish Signal and Systems Conference. University of Ulster, Magee College Derry, pp. 217-224.

O'Dwyer, Aidan and Ringwood, John (1996) The control of a process with time delay by using a modified Smith predictor compensator. In: Proceedings of the Irish Conference on DSP and Control, 1996. Trinity College Dublin, pp. 37-44.

O'Dwyer, Aidan and Ringwood, John (1995) Model Parameter And Time Delay Estimation In The Frequency Domain. In: Proceedings of the Irish DSP and Control Colloquium (IDSPCC '95). Queens University Belfast, June, 1995, pp. 39-46.

O'Dwyer, Aidan and Ringwood, John (1994) Model Parameter And Time Delay Estimation Using Gradient Methods. In: Proceedings of the Irish DSP and Control Colloquium (IDSPCC '94). Dublin City University, Dublin, Ireland, July 1994, pp. 211-218.

Ringwood, John and O'Dwyer, Aidan (1994) A frequency domain based self-tuning PID controller. In: Proceedings of the Asian Control Conference. Tokyo, Japan, July, 1994., pp. 331-334.