1. L. Niemeyer “A systematic search for insulation gases and their environmental evaluation”, this conference
2. ISO Standard 14040 Environmental Management — Life cycle assessment — principles and framework, 1st Ed. 1997-06-15
3. B.M. Weedy and A.E. Davis “Breakdown of Compressed Air in concentric Electrode Systems”, Gaseous Dielectrics IV, Knoxville, 1984, pp. 162–167
4. M.O. Pace, D.L. McCorkle and X. Waymel “Possible High Pressure Nitrogen-Based Insulation for Compressed Gas Insulated Cables”, CEIDP, Virginia Beach, 1995, pp. 195–198
5. L.G. Christophorou, R.J. Van Brunt, SF6/N2 Mixtures — Basic and HV Insulation Properties-, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 2, No.5, October 1995, pp. 952–1003