1. L.G.Christophorou, et al.:“SF6/N2 Mixtures Basic and HV insulation properties”, IEEE Trans, on DEI, Vol.2, No.5, pp.952–1003 (1995)
2. S.Ohtsuka, et al.:“Effect of mixture of a small amount of CO2 in SF6/N2 mixed gas on the insulation performance under nonuniform field”, Proc. of IEEE ISEI 2000, pp.288–291 (2000)
3. S.Ohtsuka, et al.: “ Insulation properties of CO2/N2 gas mixtures with a small amount of SF6”, Proc. of Gaseous Dielectrics IX (2001)
4. D.R.James, et al.:“Dielectric strengths of new gases and gas mixtures”, Gaseous Dielectrics I, pp.224–257,(1978)
5. J.C.Devins:“Replacement gases for SF6”, IEEE Trans. on EI Vol.15, No.2, pp.81–86 (1980)