RT Journal Article SR Electronic T1 Equivalent Martingale Measures and Risk-Neutral Pricing JF The Journal of Derivatives FD Institutional Investor Journals SP 85 OP 98 DO 10.3905/jod.1997.407984 VO 5 IS 1 A1 Rangarajan K. Sundaram YR 1997 UL https://pm-research.com/content/5/1/85.abstract AB