1. Scintillating optical fiber array for high-resolution x-ray imaging over 5 keV
2. Levy Hill Laboratories Ltd (G. Hill, Director), 5 Sheffield House, Fieldings Road, Cheshunt, Waltham, Hertfordshire EN8 9TJ, England.
3. SES Technology Consultants, Sandbank Road, Sandbank, Scotland.
4. Collimated Holes, Inc. Campbell, CA 95008, USA.