1. Campbell, M. A., Hughes, B. & Veal, D. (2016, February). A Novel Co-ordinate Measurement System Based on Frequency Scanning Interferometry. ResearchGate.
2. Campbell, Michael; Hughes, Ben; Lewis, Andrew; Martinez, Juan; Copner, Nigel; (n.d.). Multilateration With Frequency Scanning Interferometry and Four Wave Mixing. Retrieved from http://projects.npl.co.uk/luminar/publications/posters/lvmc2014-multilateration.pdf