RT Journal Article SR Electronic T1 Security Analysts JF The Journal of Portfolio Management FD Institutional Investor Journals SP 43 OP 48 DO 10.3905/jpm.1978.408643 VO 4 IS 3 A1 John C. Groth A1 Wilbur G. Lewellen A1 Gary G. Schlarbaum A1 Ronald C. Lease YR 1978 UL https://pm-research.com/content/4/3/43.abstract AB