PT - JOURNAL ARTICLE AU - Dennis E. Logue TI - Are Stock Markets Becoming Riskier AID - 10.3905/jpm.1976.13 DP - 1976 Apr 30 TA - The Journal of Portfolio Management PG - 13--19 VI - 2 IP - 3 4099 - https://pm-research.com/content/2/3/13.short 4100 - https://pm-research.com/content/2/3/13.full