APA

Skjaerpe T. R., Gustavsen T. K., Norsk Hydro, World Petroleum Congress (15th. : 1997 : Beijing), Gustavsen T. K. & Norsk Hydro.Cost reductions and increased recovery at the Oseberg Field, offshore Norway. : .

Chicago

Skjaerpe Tor R, Gustavsen Tom K, Norsk Hydro, World Petroleum Congress (15th. : 1997 : Beijing), Gustavsen Tom K and Norsk Hydro.Cost reductions and increased recovery at the Oseberg Field, offshore Norway. : .

Harvard

Skjaerpe T. R., Gustavsen T. K., Norsk Hydro, World Petroleum Congress (15th. : 1997 : Beijing), Gustavsen T. K. and Norsk Hydro.Cost reductions and increased recovery at the Oseberg Field, offshore Norway. : .

MLA

Skjaerpe Tor R, Gustavsen Tom K, Norsk Hydro, World Petroleum Congress (15th. : 1997 : Beijing), Gustavsen Tom K and Norsk Hydro.: . .