This paper provides radial measurements of efficiency for the production process possessing multi-components under different production technologies. Our approach is based on the construction of various empirical production possibility sets. Then we propose a procedure that is unaffected...

This paper critically analyses, in the context of classical and neoclassical perspectives, the concepts of ‘returns to scale’ and ‘economies of scale’ by relating the former to the concept of ‘production unit’ and the latter to the concept of ‘firm’, and concludes that returns to...