Callan, R.; Cannell, J.; Foord, R.; Hill, J.; Jones, R.; Jones, G.; Laycock, D.; Parkin, A.; Vaughan, J.M.; Willetts, D.V.; Woodfield, A., with Royal Signals and Radar Establishment, G Malver, UK and the Royal Aircraft Establishment, Bedford, UK. – Development of an Airborne CO2 Laser Velicometer. (Undated)

Callan, R.; Cannell, J.; Foord, R.; Hill, J.; Jones, R.; Jones, G.; Laycock, D.; Parkin, A.; Vaughan, J.M.; Willetts, D.V.; Woodfield, A., with Royal Signals and Radar Establishment, G Malver, UK and the Royal Aircraft Establishment, Bedford, UK. – Development of an Airborne CO2 Laser Velicometer. (Undated), RAL RAL Box 16 RAL Box 16, Box: 16. Research Applications Laboratory (RAL) Records, RAL . National Center for Atmospheric Research (NCAR) Archives. https://aspace.archives.ucar.edu/repositories/2/archival_objects/16080 Accessed February 27, 2026.