Zhao, Xueyan; Mullen, John D.; Griffith, Gary R. - In: American Journal of Agricultural Economics 79 (1997) 4, pp. 1243-1251
Conditions for exact welfare measures in equilibrium displacement modeling are examined. These relate to the functional form of supply and demand, the nature of the exogenous shift, and the definition of percentage changes. Approximation errors when these conditions are not met in empirical...