PT - JOURNAL ARTICLE AU - David E. Tierney AU - Jeffery V. Bailey TI - Opportunistic Investing AID - 10.3905/jpm.1997.409605 DP - 1997 Apr 30 TA - The Journal of Portfolio Management PG - 69--78 VI - 23 IP - 3 4099 - https://pm-research.com/content/23/3/69.short 4100 - https://pm-research.com/content/23/3/69.full