Maslyuk, Svetlana; Smyth, Russell - In: Energy Policy 36 (2008) 7, pp. 2591-2600
In this article, we examine whether WTI and Brent crude oil spot and futures prices (at 1, 3 and 6 months to maturity) contain a unit root with one and two structural breaks, employing weekly data over the period 1991-2004. To realise this objective we employ Lagrange multiplier (LM) unit root...