PT - JOURNAL ARTICLE AU - Harvey M. Salkin AU - Peter H. Ritchken TI - Comment AID - 10.3905/jpm.1981.408784 DP - 1981 Jan 31 TA - The Journal of Portfolio Management PG - 89--90 VI - 7 IP - 2 4099 - https://pm-research.com/content/7/2/89.short 4100 - https://pm-research.com/content/7/2/89.full