RT Journal Article SR Electronic T1 The Performance of Energy and Non-Energy Based Commodity Investment Vehicles in Periods of Inflation JF The Journal of Alternative Investments FD Institutional Investor Journals SP 75 OP 81 DO 10.3905/jai.1998.407845 VO 1 IS 1 A1 Philip Halpern A1 Randy Warsager YR 1998 UL https://pm-research.com/content/1/1/75.abstract AB