PT - JOURNAL ARTICLE AU - Michael D. Hirsch TI - Liquidity Filters AID - 10.3905/jpm.1975.408547 DP - 1975 Oct 31 TA - The Journal of Portfolio Management PG - 46--50 VI - 2 IP - 1 4099 - https://pm-research.com/content/2/1/46.short 4100 - https://pm-research.com/content/2/1/46.full