Fibre optic interconnecting devices and passive components performance standard - Part 111-9: Sealed closures for category S - Subterranean (IEC 61753-111-9:2009) (english version)
Fibre optic interconnecting devices and passive components performance standard - Part 111-8: Sealed closures for category G - Ground (IEC 61753-111-8:2009) (english version)
