1. IEC 60376, Second edition 2005-06, “Specification of Technical Grade Sulfur Hexafluoride (SF6) For Use in Electrical Equipment".
2. IEC 60480, Second edition 2004-10, “Guidelines for the Checking and Treatment of Sulfur Hexafluoride (SF6) Taken From Electrical Equipment and Specification for its Reuse".
3. Stokes, A., et al, 2005, “New techniques for recapturing and recycling SF6 gas and topping-up energized equipment”, Proceedings of CIGRE SC A3 & B3
4. Joint Colloquium “Present and Future of High Voltage Equipment and Substation Technologies”, CIGRE, Tokyo, Japan, 26-27 September 2005, paper 301.
5. Golden Triangle Enterprises, (n. d.), “Apparatus and Method for Recovery of Sulphur Hexafluoride”, Australian Provisional Patent 2004902990.