1. Capital-Labor Substitution and Economic Efficiency;K J Arrow;The Review of Economics and Statistics,1961
2. Inada conditions imply that production function must be asymptotically Cobb-Douglas;P Barellia;Economics Letters,2003
3. Alternative Approaches to the Estimation of Production Functions and of Technical Change;M J Beckmann;International Economic Review,1972
4. Biased Efficiency Growth and Capital-Labor Substitution in the U.S., 1899 ? 1960;P A David;The American Economic Review,1965
5. Curvature and the elasticity of substitution: Straightening it out;Grandville De La;Journal of Economics,1997