1. Röntgen, Sitzber, Würzburger Physik. Medic. Ges. (1895). Translated—Nature, 53, 274 (1896).
2. Richtmyer & Kennard, Introduction to Modern Physics, 3rd Ed., 469 (1942).
3. For information on radiographic technique, see for example. (a) Hinsley, Non-destructive Testing, VIII, Macdonald & Evans (1959). (b) McGonagle, Non-destructive Testing, VI, VII, McGraw Hill (1961). (c) Handbook of Industrial Radiology, Edward Arnold (1949). (d) A further Handbook of Industrial Radiology, Edward Arnold (1957). (e) Symposium on Radiography, American Society for Testing Materials (1943).
4. See for example. (a) Kirkpatrick & Pattee, X-ray Microscopy in Handbuch der Physik, XXX ed. Flügge, Springer (1957). (b) Cosslett & Nixon, X-Ray Microscopy, Cambridge University Press (1960).