File(s): https://fraser.stlouisfed.org/scribd/?toc_id=499904&filepath=/docs/publications/frbslreview/rev_stls_198905.pdf&start_page=15#scribd-open

File(s): File format is application/pdf https://files.stlouisfed.org/files/htdocs/publications/review/89/05/Black_May_Jun1989.pdf