Valverde, Santiago Carbó; Humphrey, David; Paso, … - In: Journal of Productivity Analysis 27 (2007) 3, pp. 209-220
Parametric and nonparametric procedures are used to identify the apparent source of cost inefficiency in banking. Inefficiencies of 20–25% from earlier studies are reduced to 1–5% when, in addition to commonly specified cost function influences, variables reflecting banks’ external...