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

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.