Eio, C P; Protheroe, S; Ridler, N M (2006) Characterising beadless air lines as reference artefacts for S-parameter measurements at RF and microwave frequencies. IEE Proc. Sci. Meas. Technol., 153 (6). pp. 229-234.
Protheroe, S (1999) Comparison of alternative adapter characterisation techniques. IEE Colloq. Dig., 0008. pp. 8/1-5.
Miall, J; Dudley, R A; Protheroe, S (2013) Pre-Launch calibration of space instrumentation from 100 GHz to 1 THz. In: 6th UK, Europe, China Millimeter Waves and THz Technology Workshop (UCMMT), 9-11 September 2013, Rome, Italy.
Protheroe, S (1999) Improved use of the UK waveguide noise standards. In: BEMC 99 - 9th International Conference on Electromagnetic Measurement, 2-4 November 1999, Brighton, UK.
Celep, M; Skinner, J; Protheroe, S; Fletcher, N; Ridler, N Investigating the use of a Coaxial Air Line as an Impedance Standard at Low Frequencies. In: 2024 Conference on Precision Electromagnetic Measurement (CPEM), 08-12 July 2024, Denver, CO, USA.