1. L.G. Christophorou, I. Sauers et.al., “Recent Advances in Gaseous Dielectrics at Oak Ridge National Laboratory”, IEEE Trans. Electr. Insul., 19 (6) 1984, 550–566”
2. G. Frind et al: “ EPRI Report EL-284”, Jan. 1977
3. ISO Standard 14040 Environmental Management — Life cycle assessment — principles and framework, 1st Ed. 1997-06-15
4. H.O. Noeske, “Are thrmal recovery speed in different gases and gas mixtures”, IEEE-PAS-100, 1981, 4612-4620