Young, Andrew; Higgins, Matthew and Levy, Daniel (2007): Black Populations and Economic Growth: An Extreme Bounds Analysis of Mississippi County-Level Data. Unpublished.
Young, Andrew and Levy, Daniel (2006): Explicit Evidence on an Implicit Contract. Unpublished.
Higgins, Matthew; Young, Andrew and Levy, Daniel (2009): Federal, State, and Local Governments: Evaluating their Separate Roles in US Growth. Unpublished.
Higgins, Matthew; Young, Andrew and Levy, Daniel (2006): Federal, State, and Local Governments: Evaluating their Separate Roles in US Growth. Unpublished.
Young, Andrew; Higgins, Matthew and Levy, Daniel (2006): Heterogeneous Convergence. Unpublished.
Higgins, Matthew; Young, Andrew and Levy, Daniel (2007): Robust Correlates of County-Level Growth in the U.S. Unpublished.
Young, Andrew; Higgins, Matthew and Levy, Daniel (2007): Sigma Convergence versus Beta Convergence: Evidence from U.S. County-Level Data. Unpublished.
Spash, Clive L. and Young, Andrew (1994): Sources of energy and the environment. Published in: (1995): pp. 159-172.
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.
