A new procedure for the measurement of efficiency and technical change is presented, using DEA with three-dimension data (box data), pooling over sectors, regions and time. Until now, when pooling the data in panel applications it has been assumed that technology remained unchanged, so...

Productivity growth for the agricultural sectors of the 17 Spanish regions over the period 1977-88 is studied using non-parametric programming techniques. Productivity changes based on conventional inputs are linked to other economic, geographic and institutional issues. Average technical change...