TY - RPRT TI - SF6 insulation: possible greenhouse problems and solutions AU - Christophorou, Loucas G AU - Brunt, Richard J Van PY - 1995 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 5685 DO - 10.6028/NIST.IR.5685 ER -