TY - JOUR AU - TI - Flexible Functional Forms and Global Curvature Conditions JF - Econometrica DO - 10.2307/1911156 DA - 1987-01-01 UR - https://www.deepdyve.com/lp/unpaywall/flexible-functional-forms-and-global-curvature-conditions-uIdorefxg4 DP - DeepDyve ER -