P. Jeffery

Gas ionization methods of electrostatic image formation in radiography.

H. E. Johns, J. Boag, A. Fenster, 1974, The British journal of radiology.

An examination of artefacts in the powder development of electrostatic latent images.

H. E. Johns, J. Boag, B. Wilson, 1974, Physics in medicine and biology.

Electron avalanche amplification in x-ray imaging devices.

J. Boag, P. Jeffery, 1974, Physics in medicine and biology.