The Gray Cancer institute X-ray microprobe and its radiobiological applications G. Schettino, M. Folkard, A.G. Michette, B. Vojnovic, S.J. Pfauntsch, K.M. Prise, K.D. Atkinson, J. Holroyd and B.D. Michael J. Phys. IV France, 104 (2003) 301-304 DOI: 10.1051/jp4:200300085