PT - JOURNAL ARTICLE AU - Haim Levy AU - Deborah Gunthorpe TI - Optimal Investment Proportions in Senior Securities and Equities Under Alternative Holding Periods AID - 10.3905/jpm.1993.409457 DP - 1993 Jul 31 TA - The Journal of Portfolio Management PG - 30--36 VI - 19 IP - 4 4099 - https://pm-research.com/content/19/4/30.short 4100 - https://pm-research.com/content/19/4/30.full