PT - JOURNAL ARTICLE AU - Peter H. Ritchken TI - Enhancing mean-variance analysis with options AID - 10.3905/jpm.1985.409003 DP - 1985 Apr 30 TA - The Journal of Portfolio Management PG - 67--71 VI - 11 IP - 3 4099 - https://pm-research.com/content/11/3/67.short 4100 - https://pm-research.com/content/11/3/67.full