RT Journal Article SR Electronic T1 How to Maximize Stationarity of Beta JF The Journal of Portfolio Management FD Institutional Investor Journals SP 67 OP 68 DO 10.3905/jpm.1983.67 VO 9 IS 4 A1 Andreas C Christofi YR 1983 UL https://pm-research.com/content/9/4/67.abstract AB