1. S. Sridharan, R.P. Blonski, H.B. Emlemdi, B. Hasan, G.J. Roberts, I.H. Joyce, United States Patent 6,105,394, 2000.
2. S. Sridharan, G.C. Kora, J. Anquetil, R.P. Blonski, I.H. Joyce, United States Patent 6,936,556, 2005.
3. Optical Properties of Bi2O3-ZnO-SiO2 Glass System for Eco Transparent Dielectric in PDP
4. H. Masuda, United States Patent 6,989,340, 2006. .
5. Thermal properties and glass formation in the SiO2–B2O3–Bi2O3–ZnO quaternary system