References
- A, K. Tallent and A. W. Dolland. Phot. Jour., 19, 273 (1895).
- E. Deville, Trans. Roy. Soc. Canada. 1, sections 3, 29 (1895); Process Photogram, 3. 36. 50, 65, 81 (1896).
- H. Calmels and L. P. Clerc.Process Engravers Monthly. 15, 217, 249, 267 (1908); L. P. Clerc, Photographic Journal. 61. 311 (1921).
- L. P. Clerc, La Technique des Reproductions Photomechaniques, Vol. 1 (Bouzard-Calmels. Paris, 1947).
- M. Levy. Process Photogram. 3, 20 (1896).
- A. Fruwirth and J. S. Mertle. American Photoengrmer, 27, 291 (1935); Diffraction Theory of Halftone, (Inter. Photocngravers Union of North America, 1936).
- J. A. C. Yule, Jour. Franklin Inst., 231 (1). 23, (1941); 235 (5), 483(1943).
- V. G. W. Harrison. Photographic Journal. 92B. 74-91 (1952).
- A. J. Bull. W. J. Smith and E. L. Turner, Photographic Journal, 57, 8-16(1917); A. J. Bull. Proc. 7th Inter. Congress Photography, London 1928. p. 374.
- R. Grenell, Penrose Annual. 24, 65 (1922).
- F. J. Tritton. Photographic Journal. 81. 235 (1941).
- W. B. Hislop, Proc. R.P.S. Centenary Conference, London 1953, p. 517.
- American Photoengravcr, 1929.
- E.L. Turner and C. D. Hallam. Photographic Journal, 62, 400 (1922).
- J. A. C. Yule. Modern Lithography. 18 (9), 61 (1950).
- F.J. Howe and J. A. C. Yule, Technical Association Graphic Arts, 6th Session 1954.
- H. M. Cartwright and R. S. Cox, Proc. R.P.S. Centenary Conference, London, 1953, p. 511.
- J. H. Bow, Jour. Photographic Science. 3 (4), 121 (1955).
- V. G. W. Harrison, G. A. Mitchener and L. E. Lawson, Jour. Photographic Science. 3 (4), 97 (1955).
- W. Rebner, Agfa Repro. Mitteilungen, 1958; review by H. M. Cartwright, Litho-Printer, 6, 13 (1958).
- D. C. Gresham, Photographic Journal. 92B. 91 (1952).
- F. G. S. Cackctt. Jour. Photographic Science, 3 (4), 129 (1955).
- F. J. Tritton and E. T. Wilson. Photographic Journal, 79, 396 (1939).
- F. R. Clapper. Tech. Assoc. Graphic Arts. 9th Session. 1957.
- J. A. Yule, U.S.P. 2,292,313 (1942); 2,304,988 (1942).
- F. R. Clapper, Tech. Assoc. Graphic Arts, 5th Session, 1953.
- M. Hepher, Penrose Annual. 47, 116 (1953).