PT - JOURNAL ARTICLE AU - Philip Green TI - Planets and Satellites AID - 10.3905/joi.3.1.19 DP - 1994 Feb 28 TA - The Journal of Investing PG - 19--23 VI - 3 IP - 1 4099 - https://pm-research.com/content/3/1/19.short 4100 - https://pm-research.com/content/3/1/19.full