RT Journal Article SR Electronic T1 An Efficient Approach for Pricing Spread Options JF The Journal of Derivatives FD Institutional Investor Journals SP 76 OP 91 DO 10.3905/jod.1995.407928 VO 3 IS 1 A1 Neil D. Pearson YR 1995 UL https://pm-research.com/content/3/1/76.abstract AB