Estimating the Structural Equations of Implicit Markets and Household Production Functions
当边际价格非常数时，普通最小二乘法估计结构方程的价格弹性会有偏。本文开发了两阶段最小二乘法，用于估计价格梯度非线性时的特征价格（及家庭生产函数）需求函数。
Whenever marginal prices are nonconstant, as in most hedonic and household production function markets, ordinary least squares estimates of the price elasticities of structural equations will be biased. A two-stage least squares estimation procedure is developed and applied to estimate hedonic (and potentially household production function) demand functions when price gradients are nonlinear.