1. Brown KE, Chalmers AG, Wharmby DO (1982) Tin sodium halide lamps in ceramic envelopes. J Illumin Eng Soc 11(2):106–114
2. Carleton S, Seinen PA, Stoffels J (1997) Metal halide lamps with ceramic envelopes: A breakthrough in color control. J Illumin Eng Soc 26(1):139–145
3. Datta RK (1997) Sealing materials for ceramic envelopes. United States patent 4076991 (Date filed: 6 May 1977)
4. DeCarr SM, Grande JC, Gyor M, Laher I, Lovett DJ, Meszaros J, Mucklejohn SA, Toth Z (2001) Characterising metal-to-ceramic seals for high intensity discharge lamps. In: Proceedings of the 9th international symposium on science and technology light sources (LS9), Ithaca, pp 141–142. ISBN 0-9713422-0-2
5. Geven ASG, Renardus MLP, Seinen PA, Stoffels JAJ, Wijenberg C, Diells HR (1993) High-pressure discharge lamp. European patent 0587238 (Date filed: 1 Sep 1993)