PT - JOURNAL ARTICLE AU - Lakhbir S. Hayre TI - Arbitrage–free spread AID - 10.3905/jpm.1991.409330 DP - 1991 Apr 30 TA - The Journal of Portfolio Management PG - 78--79 VI - 17 IP - 3 4099 - https://pm-research.com/content/17/3/78.short 4100 - https://pm-research.com/content/17/3/78.full