Atkinson, S. E, Primont, D., Tsionas, M. STATISTICAL INFERENCE IN EFFICIENT PRODUCTION WITH BAD INPUTS AND OUTPUTS USING LATENT PRICES AND OPTIMAL DIRECTIONS. Terry College Department Of Economics, forthcoming JOURNAL OF ECONOMETRICS.
Atkinson, S.E,, Tsionas, M. Directional distance functions: optimal endogenous directions. Terry College Department Of Economics, JOURNAL OF ECONOMETRICS, 109: 301-314, 2016.
Atkinson, S.E., Tsionas, M. 2017. SHADOW DIRECTIONAL DISTANCE FUNCTIONS WITH BADS: GMM ESTIMATION OF OPTIMAL DIRECTIONS AND EFFICIENCIES . Terry College Department Of Economics, EMPIRICAL ECONOMICS 30 March 2017.