CIGRE <br/><br/>
CIGRE; No.117-1997; SF6 Recycling guide- Reuse of SF6 gas in ele ctrical power equipment and final disposal;Task Force 23.10.01 

 - Paris  CIGRE  1997 
 - 46 
<br/><br/><label>Universal Decimal Class. No.: </label>621.31  / CIG.97