RT Journal Article SR Electronic(1) A1 Yokota, K. A1 Okui, A.YR 2021 T1 PETROLEUM SYSTEM OF DUVA OIL AND GAS FIELD IN NORTHERN NORTH SEA, NORWAY JF , VO 2021 IS 1 SP 1 OP 2 DO https://doi.org/10.3997/2214-4609.202134117 PB European Association of Geoscientists & Engineers, SN 2214-4609, AB , UL https://www.earthdoc.org/content/papers/10.3997/2214-4609.202134117