Reference

Stéphane Auray, and Patrick Fève, On Sunspots, Habits and Monetary Facts, Macroeconomic Dynamics, vol. 12, n. 1, February 2008, pp. 72–96.

Stéphane Auray, and Patrick Fève, On Sunspots, Habits and Monetary Facts, July 2005, revised May 2006.