RT Journal Article SR Electronic T1 Financial Instruments to Lock in Payoffs JF The Journal of Derivatives FD Institutional Investor Journals SP 77 OP 85 DO 10.3905/jod.1994.407883 VO 1 IS 3 A1 G. George Yu YR 1994 UL https://pm-research.com/content/1/3/77.abstract AB