PT - JOURNAL ARTICLE AU - Andreas C Christofi TI - How to Maximize Stationarity of Beta AID - 10.3905/jpm.1983.67 DP - 1983 Jul 31 TA - The Journal of Portfolio Management PG - 67--68 VI - 9 IP - 4 4099 - https://pm-research.com/content/9/4/67.short 4100 - https://pm-research.com/content/9/4/67.full