1. Gases for electrical insulation and arc interruption: Possible present and future alternatives to pure SF6. NIST Technical Note 1425, 1997.
2. Application problems of N2/SF6 mixtures to gas-insulated bus. Gaseous Dielectrics, VIII, 1998.
3. et al. Area effect of electrode of N2/SF6 mixtures and N2. Meeting of the IEE, Japan, 1464, 1998.
4. et al. Investigation of N2/SF6 mixtures to gas insulated bus. Technical Meeting on Electrical Discharges, IEE, Japan, Vol. ED-98-176, 1998.
5. et al. Area effect of electrode of N2/SF6 mixtures and N2 (II). Meeting of Power and Energy Society, IEE Japan, 414, 1999.