RT Journal Article SR Electronic T1 Triangular Equilibrium and Arbitrade in the Market for Options to Exchange Two Assets JF The Journal of Derivatives FD Institutional Investor Journals SP 60 OP 69 DO 10.3905/jod.1993.407873 VO 1 IS 1 A1 William Margrabe YR 1993 UL https://pm-research.com/content/1/1/60.abstract AB