1. T.W.Ford, A.D.Stead, C.P.Hills, R.J.Rosser and N.Rizvi: J. X-Ray Sci. Technol. 1, 207–210 (1989).
2. A.D.Stead, T.W.Ford, J.A.Catcheside, C.P.Hills and A.Ridgeley: J. X-Ray Sci. Technol. In Press (1990).
3. T.W.Ford, A.D.Stead, C.P.Hills, R.J.Rosser and N.Rizvi: Annual Report to the Laser Facility Committee, Rutherford Appleton Laboratory, A1. 7 (1989).
4. T.W.Ford, A.D.Stead, G.Lawes, C.P.Hills and N.Rizvi: Inst. Phys. Conf. Ser. No 98: Chapter 12 pp 527–530 (1990).
5. A.D.Stead and T.W.Ford: Ann. Bot. 64, 713–719 (1989).