References
- Gibson, K. S. and Mcnicholas, H. M., “The Ultra-violet and visible transmission of eye protecting glasses,” Tech. pp B.S. 6, T 119 (1919).
- Coblentz W. W., Emerson, W. B. and Long, M. B., “Light transmission of various substances,” Bull. Bur. Standards, 14, 653 (1918–19).
- Hettinger, E. L., “Necessity of welding glasses that will protect the eye,” Bull. Va Polytec. Inst., 38, 25–30 (1941) and also Ceram Abs., 21, 9 (1942).
- “Glasses for protecting eye from harmful radiations,’ Bur. Standards Tech. papers 93, (1919).
- Coblentz, W. W., “Recent progress in the manufacture of glasses for protecting the eye from injurious radiations,” J. Franklin Inst., 188, 255–61 (1919).
- Coblentz, W. W. and Stair, R., “Spectral transmissive properties and use of coloured eye protective glasses,” Jour. Soc. Glass Tech., 22, A 350, (1938).
- Stair, R., “Spectral transmissive properties and use of eye protective glasses,” National Bureau of Standards, Circular 471 of Oct. 8 (1948).
- Dreyfus, MARC G., Upton, LEE O. and Jupnik, HELEN, American patent No. 2,854,349 of Sep. 30, 1958. Chemical Abst., 42, 77 (1959).
- “Filters for use during welding and similar industrial operations”, B S. 679: 1959, British Standards Institution, British Standards House, 2 Park St., London W 1.
- “Federal specifications” National Bureau of Standards Letter Circular LC 857.
- Moore, H. and Prasad, S. N., “A spectrophotometric study of the colours given by iron in alkali-lime-silica and alkali-lime-boro silicate glasses; Part I—The forms in which the iron exists in these glasses,” Jour. Soc. Glass Tech., 33, 336–370 (1949).
- Turner, W. E. S. and Weyl, W. A., “Constitution and colour of glasses containing iron and manganese oxides,” Jour. Soc. Glass Tech., 19, 208–316 (1935).
- Von Kuhl, C., Rudow, H. and Weyl, W. A., “Oxydations und Reduktionsgleichgewichte in Farbglasern,” Sprechsaal, 71, 91 (1938).