1. Abe, K., Fluorine doped silica for optical waveguides, in Proceedings of the Second European Conference on Optical Fiber Communication, Paris, France, September 27–30, 1976, Paris: The French Society of Electricians, Electronicians, and Radio Electricians, 1976, pp. 59–61.
2. Eron’yan, M.A., Kuzub, S.G., Zhakhov, V.V., Ivantsovskii, P.P., Karpov, L.G., Khotimchenko, V.S., and Lukin, A.F., Doping of silica glass with fluorine by the gas-phase deposition method, Tezisy III Vsesoyuznoi konferentsii po tekhnologii volokonnykh svetovodov (Abstracts of Papers of the Third All-Union Conference on the Technology of Optical Fibers, Gor’kii, Soviet Union, 1982), Gor’kii, 1982, p. 51.
3. Walker, K.L., Csencsits, R., and Wood, D.L., Chemistry of fluorine incorporation in the fabrication of optical fibers, in Proceedings of the Sixth Topical Meeting on Optical Fiber Communication, New Orleans, Louisiana, United States, February 28–March 2, 1983, Washington, DC (United States): The Optical Society of America and Institute of Electrical and Electronics Engineers (OSA/IEEE), 1983, pp. 36–37.
4. Andreev, A.G., Ermakov, V.S., Kryukov, I.I., Tsibinogina, M.K., Dukel’skii, K.V., Eron’yan, M.A., Petrovskii, G.T., Serkov, M.M., and Tsibinogina, M.K., Investigation into doping of silica glasses with fluorine by the modified chemical vapor deposition method, Glass Phys. Chem., 2006, vol. 32, no. 1, pp. 33–37.
5. Paul, M.C., Sen, R., Youngman, R.E., and Dhar, A., Fluorine incorporation in silica glass by the MCVD process: Study of fluorine incorporation zone, evaluation of optical properties, and structure of the glass, J. Non-Cryst. Solids, 2008, vol. 354, pp. 5408–5420.