PT - JOURNAL ARTICLE AU - Alex Kane TI - Coins AID - 10.3905/jpm.1984.408944 DP - 1984 Jan 31 TA - The Journal of Portfolio Management PG - 44--51 VI - 10 IP - 2 4099 - https://pm-research.com/content/10/2/44.short 4100 - https://pm-research.com/content/10/2/44.full