References
- T. Thorne Baker and W. A. Balmain. I’lmt. J.,66, 299, 1926.
- J. H. Webb. J. Opt. Soc. Amer., 38, 27, 1948.
- H. Fesefeldt and Z. Gyulai. Nuchr. Ges. Wiss., Gflttingen, p. 229, 1929.
- C. Schcll. Ann. Phys., 35, 695, 1911.
- E. W. H. Selwyn. Private communication.
- L. Silbcrslein. J. Opt. Soc. Amer., 32, 326, 1942.
- E. Pitts. Private communication.
- F. F. Renwick and V. 13. Sease. Phot. J., 64, 360, 1924.