Appendix B: Eighty-eight Selected Indicators Classified by Timing and Economic Process: Timing Characteristics for Peaks and Troughs Separately

Geoffrey H. Moore and Julius Shiskin, Indicators of Business Expansions and Contractions (NBER, 1967), chap. 7, https://www.nber.org/books-and-chapters/indicators-business-expansions-and-contractions/appendix-b-eighty-eight-selected-indicators-classified-timing-and-economic-process-timing.