References
- Sir Hugh Ford, 'Energy, the Key to the history of engineering' (20th Dickinson Memorial Lecture), Trans. Newcomen Soc., vol. 63 (1992), pp. 165–179.
- Diesel & Gas Turbine Worldwide, March 1992.
- Phase Shift Torquemeters for Gas Turbine Development & Monitoring. R. D. van Millingen BSc, CEng, and J. D. van Millingen BSc The American Society of Mechanical Engineers (1991) Ref 91-GT–189