Long, D. (1991). European gas oil markets: Price relationships, hedging and efficiency. Oxford Institute for Energy Studies.
Chicago-viite (17. p.)Long, D. European Gas Oil Markets: Price Relationships, Hedging and Efficiency. Oxford Institute for Energy Studies, 1991.
MLA-viite (9. p.)Long, D. European Gas Oil Markets: Price Relationships, Hedging and Efficiency. Oxford Institute for Energy Studies, 1991.
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