Park, Byeong; Simar, Leopold and Zelenyuk, Valentin (2006): Local likelihood estimation of truncated regression and its partial derivatives: theory and application. Published in: Journal of Econometrics , Vol. 1, No. 146 (2008): pp. 185-198.
Simar, Leopold and Zelenyuk, Valentin (2004): On testing equality of distributions of technical efficiency scores. Published in: Econometric Reviews , Vol. 25, No. 4 (December 2006): pp. 497-522.
