Reference
Abdelaati Daouia, and Léopold Simar, “Nonparametric Efficiency Analysis: A Multivariate Conditional Quantile Approach ”, Journal of Econometrics, vol. 140, n. 2, 2007, pp. 375–400.
See also
Published in
Journal of Econometrics, vol. 140, n. 2, 2007, pp. 375–400