A new production function? Bowled by a googly

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Abstract
This paper clarifies the nature of the CES production function described in a recent paper by Bairam, Howells and Turner (BHT) in this journal. It is shown that the standard constant returns to scale CES function is a special case of the BHT function. In all other cases, the BHT function is not homogeneous of any degree in its inputs, and hence cannot be considered a neoclassical production function. Further, the BHT function is restrictive in that it does not admit homogeneous non-constant returns to scale CES functions.

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