French, G J (1999) A primary national impedence standard from 75 GHz to 110 GHz in metallic waveguide. Microw. Eng. Eur. (Octobe). pp. 27-34.
French, G J (1999) A primary national impedance standard from 75 GHz to 110 GHz. In: BEMC 99 - 9th International Conference on Electromagnetic Measurement, 2-4 November 1999, Brighton, UK.