RT Journal Article SR Electronic T1 Spot Returns, Roll Yield, and Diversification with Commodity Futures JF The Journal of Alternative Investments FD Institutional Investor Journals SP 16 OP 32 DO 10.3905/jai.1998.407861 VO 1 IS 3 A1 Mark J.P. Anson YR 1998 UL https://pm-research.com/content/1/3/16.abstract AB