Ellis, Joseph. Ahead of the curve a commonsense guide to forecasting business and market cycles / [Book] : Joseph H. Ellis. - Boston, Mass. : Harvard Business School Press, c2005. - xxiii, 276 p. : ill. ; 25 cm. Includes index. All. ISBN: 1591396913 Subjects--Topical Terms: Economic forecasting. Dewey Class. No.: 330.0112