P. Driscoll et al., TESTING HYPOTHESES OF FUNCTIONAL STRUCTURE - SOME RULES FOR DETERMINING FLEXIBILITY OF RESTRICTED PRODUCTION MODELS, American journal of agricultural economics, 74(1), 1992, pp. 100-108
Rules are proposed to help determine whether a production function mai
ntains flexibility under parametric restrictions required to impose ho
mogeneity, homotheticity, and forms of separability. After imposing re
strictions and applying the rules, many second-order "flexible" forms
are found to be more inflexible than formerly believed.