Flexible Production Functions -- 1.3 Parametric Forms and their Econometric Estimation -- 1.4 Nonparametric Theory: Different … Facets -- 1.5 Implications of Nonparametric Theory -- 2 The Nonparametric Approach -- 2.1 Convex Hull Method -- 2 ….5 Distribution of Technical and Price Efficiency -- 3 Interface With Parametric Theory -- 3.1 Average versus Optimal Production …