Belongia, Michael and Hinich, Melvin (2009): The evolving role and definition of the federal funds rate in the conduct of U.S. monetary policy. Unpublished.
Levy, Daniel and Young, Andrew (2004): The Real Thing: Nominal Price Rigidity of the Nickel Coke, 1886–1959. Published in: Journal of Money, Credit and Banking , Vol. Volume No. 36, No. Issue No. 4 (August 2004): pp. 765-799.
