Girma, Paul Berhanu; Paulson, Albert S. - In: Journal of Futures Markets 19 (1999) 8, pp. 931-955
This article investigates the long‐term pricing relationship among crude oil, unleaded gasoline, and heating oil futures prices, and finds that these commodities futures prices are cointegrated. The study finds that the spreads between crude oil and its end products are stationary....