1. Cheng , P.C. Peng , H.B. Feder , R. McGowan , J.W. 1982 The use of the transmission electron microscope as a viewing tool for high resolution soft X-ray contact microscopy Electron Microscopy (10th Int. Electron Microsc. Proc) 461 462
2. Recent developments in x-ray contact microscopy;Feder;Science,1985
3. High-Resolution Soft X-Ray Microscopy
4. X-rays in microradiography;Goby;C.R. Acad. Sci., Paris,1913