References
- Longmore, T. A. Medical Photography, 246, Focul Press (1949).
- Freeborn, E. Med. & Biol. Illus., 3. 77 (1953).
- Kemp, D. Personal Communication (1953).
- Dent, R. V. Bril. J. Phot.. 84. 709 (1937).
- Dolgopol, V. B. J. Tech. Meth., 19. 52 (1939).
- Hale, C. J.B.P.A., 21. 1 (1953).
- Kent, F. W. Med. Rad. & Phot., 24. 3 (1948).
- Polaroid Corporation. Polarized Light and Its Applications, 13 (1945).