GOBE NDX 77mm variable neutral density | ND-filter for filmmakers and long time exposures - YouTube
Gobe Neutral Density Filter Review - Top 3 Reasons you should use Gobe ND Filters for your camera — GenXploreMore - Travel And Photography Gear Reviews
ND Filters | Neutral Density Filters | Urth US
Urth UNDX400ST77 Replacement for Gobe G77JONDX | B&H Photo Video
Rent 77mm ND Filter Kit Gobe ND8, ND64, ND1000 MRC 16-Layer in London (rent for £10.00 / day, £3.57 / week)