1. Gas hydrate in the southern Barents Sea, indicated by a shallow seismic anomaly;Andreassen;First Break,1990
2. Naturally occurring gas hydrates in the Mackenzie Delta, N.W.T;Bily;Bulletin of Canadian Petroleum Geology,1974
3. J. S. Booth M. M. Rowe K. M. Fischer Offshore gas hydrate sample database U.S. Geological Survey Open-File Report 96-272 1996