Cazals C, J-P Florens and L Simar (2002). “Nonparametric Frontier Estimation: A Robust Approach.” J Econometrics 106(1): 1-25.
Cazals C, J-P Florens and L Simar (2002). “Nonparametric Frontier Estimation: A Robust Approach.” J Econometrics 106(1): 1-25.